7966431 has 20 divisors (see below), whose sum is σ = 12983784. Its totient is φ = 4827600.

The previous prime is 7966429. The next prime is 7966451. The reversal of 7966431 is 1346697.

7966431 is a `hidden beast` number, since 7 + 9 + 6 + 643 + 1 = 666.

It is not a de Polignac number, because 7966431 - 2¹ = 7966429 is a prime.

It is a super-2 number, since 2×7966431² = 126928045755522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7966451) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3580 + ... + 5361.

Almost surely, 2^7966431 is an apocalyptic number.

7966431 is a deficient number, since it is larger than the sum of its proper divisors (5017353).

7966431 is a wasteful number, since it uses less digits than its factorization.

7966431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8964 (or 8955 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 7966431 is about 2822.4866695877. The cubic root of 7966431 is about 199.7198661416.

It can be divided in two parts, 796 and 6431, that added together give a palindrome (7227).

The spelling of 7966431 in words is "seven million, nine hundred sixty-six thousand, four hundred thirty-one".