7925643 has 24 divisors (see below), whose sum is σ = 12579840. Its totient is φ = 4768560.

The previous prime is 7925629. The next prime is 7925651. The reversal of 7925643 is 3465297.

7925643 is a `hidden beast` number, since 7 + 9 + 2 + 5 + 643 = 666.

It is not a de Polignac number, because 7925643 - 2⁴ = 7925627 is a prime.

It is an Ulam number.

7925643 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 7925598 and 7925607.

It is not an unprimeable number, because it can be changed into a prime (7925663) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 21898 + ... + 22256.

It is an arithmetic number, because the mean of its divisors is an integer number (524160).

Almost surely, 2^7925643 is an apocalyptic number.

7925643 is a deficient number, since it is larger than the sum of its proper divisors (4654197).

7925643 is a wasteful number, since it uses less digits than its factorization.

7925643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 599 (or 596 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 7925643 is about 2815.2518537424. The cubic root of 7925643 is about 199.3784285794.

The spelling of 7925643 in words is "seven million, nine hundred twenty-five thousand, six hundred forty-three".