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1007997 = 3335999
BaseRepresentation
bin11110110000101111101
31220012201020
43312011331
5224223442
633334353
711365524
oct3660575
91805636
101007997
11629361
124073b9
13293a63
141c34bb
1514d9ec
hexf617d

1007997 has 4 divisors (see below), whose sum is σ = 1344000. Its totient is φ = 671996.

The previous prime is 1007977. The next prime is 1008001. The reversal of 1007997 is 7997001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7997001 = 32665667.

It is a cyclic number.

It is not a de Polignac number, because 1007997 - 26 = 1007933 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1007957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167997 + ... + 168002.

It is an arithmetic number, because the mean of its divisors is an integer number (336000).

21007997 is an apocalyptic number.

It is an amenable number.

1007997 is a deficient number, since it is larger than the sum of its proper divisors (336003).

1007997 is an equidigital number, since it uses as much as digits as its factorization.

1007997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336002.

The product of its (nonzero) digits is 3969, while the sum is 33.

The square root of 1007997 is about 1003.9905378040. The cubic root of 1007997 is about 100.2658592290.

The spelling of 1007997 in words is "one million, seven thousand, nine hundred ninety-seven".

Divisors: 1 3 335999 1007997