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70189607 = 661106187
BaseRepresentation
bin1000010111100…
…00001000100111
311220002000001002
410023300020213
5120432031412
610544223515
71511413265
oct413601047
9156060032
1070189607
1136690544
121b60ab9b
1311706c17
149471435
156266dc2
hex42f0227

70189607 has 4 divisors (see below), whose sum is σ = 70296456. Its totient is φ = 70082760.

The previous prime is 70189597. The next prime is 70189627. The reversal of 70189607 is 70698107.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70189607 - 220 = 69141031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70189627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52433 + ... + 53754.

It is an arithmetic number, because the mean of its divisors is an integer number (17574114).

Almost surely, 270189607 is an apocalyptic number.

70189607 is a deficient number, since it is larger than the sum of its proper divisors (106849).

70189607 is a wasteful number, since it uses less digits than its factorization.

70189607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106848.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 70189607 is about 8377.9237881470. The cubic root of 70189607 is about 412.5003014384.

The spelling of 70189607 in words is "seventy million, one hundred eighty-nine thousand, six hundred seven".

Divisors: 1 661 106187 70189607