7864957 has 2 divisors, whose sum is σ = 7864958. Its totient is φ = 7864956.

The previous prime is 7864951. The next prime is 7864991. The reversal of 7864957 is 7594687.

It is a happy number.

7864957 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7778521 + 86436 = 2789^2 + 294^2 .

It is an emirp because it is prime and its reverse (7594687) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7864957 - 2³ = 7864949 is a prime.

It is a super-2 number, since 2×7864957² = 123715097223698, which contains 22 as substring.

7864957 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7864951) 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 as a sum of consecutive naturals, namely, 3932478 + 3932479.

It is an arithmetic number, because the mean of its divisors is an integer number (3932479).

Almost surely, 2^7864957 is an apocalyptic number.

It is an amenable number.

7864957 is a deficient number, since it is larger than the sum of its proper divisors (1).

7864957 is an equidigital number, since it uses as much as digits as its factorization.

7864957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 423360, while the sum is 46.

The square root of 7864957 is about 2804.4530661075. The cubic root of 7864957 is about 198.8682494502.

The spelling of 7864957 in words is "seven million, eight hundred sixty-four thousand, nine hundred fifty-seven".