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8212897 = 711106661
BaseRepresentation
bin11111010101000110100001
3120110020222101
4133111012201
54100303042
6452010401
7126544210
oct37250641
916406871
108212897
1146aa520
122900a01
131917304
14113b077
15ac36b7
hex7d51a1

8212897 has 8 divisors (see below), whose sum is σ = 10239552. Its totient is φ = 6399600.

The previous prime is 8212891. The next prime is 8212901. The reversal of 8212897 is 7982128.

8212897 is digitally balanced in base 3 and base 8, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-8212897 is a prime.

It is a Duffinian number.

8212897 is strictly pandigital in base 8.

It is not an unprimeable number, because it can be changed into a prime (8212891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53254 + ... + 53407.

It is an arithmetic number, because the mean of its divisors is an integer number (1279944).

Almost surely, 28212897 is an apocalyptic number.

It is an amenable number.

8212897 is a deficient number, since it is larger than the sum of its proper divisors (2026655).

8212897 is a wasteful number, since it uses less digits than its factorization.

8212897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106679.

The product of its digits is 16128, while the sum is 37.

The square root of 8212897 is about 2865.8152417768. The cubic root of 8212897 is about 201.7586324014.

Subtracting from 8212897 its product of digits (16128), we obtain a square (8196769 = 28632).

The spelling of 8212897 in words is "eight million, two hundred twelve thousand, eight hundred ninety-seven".

Divisors: 1 7 11 77 106661 746627 1173271 8212897