7997957 has 16 divisors (see below), whose sum is σ = 9189312. Its totient is φ = 6894720.

The previous prime is 7997947. The next prime is 7997959. The reversal of 7997957 is 7597997.

It is a cyclic number.

It is not a de Polignac number, because 7997957 - 2¹⁸ = 7735813 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 7997899 and 7997908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7997959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17273 + ... + 17729.

It is an arithmetic number, because the mean of its divisors is an integer number (574332).

Almost surely, 2^7997957 is an apocalyptic number.

It is an amenable number.

7997957 is a deficient number, since it is larger than the sum of its proper divisors (1191355).

7997957 is a wasteful number, since it uses less digits than its factorization.

7997957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548.

The product of its digits is 1250235, while the sum is 53.

The square root of 7997957 is about 2828.0659468973. The cubic root of 7997957 is about 199.9829735505.

The spelling of 7997957 in words is "seven million, nine hundred ninety-seven thousand, nine hundred fifty-seven".