7640451 has 48 divisors (see below), whose sum is σ = 14327040. Its totient is φ = 3810240.

The previous prime is 7640443. The next prime is 7640453. The reversal of 7640451 is 1540467.

It is not a de Polignac number, because 7640451 - 2³ = 7640443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7640453) 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 in 47 ways as a sum of consecutive naturals, for example, 15316 + ... + 15806.

It is an arithmetic number, because the mean of its divisors is an integer number (298480).

Almost surely, 2^7640451 is an apocalyptic number.

7640451 is a deficient number, since it is larger than the sum of its proper divisors (6686589).

7640451 is a wasteful number, since it uses less digits than its factorization.

7640451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 533 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 7640451 is about 2764.1365740498. The cubic root of 7640451 is about 196.9577155074.

The spelling of 7640451 in words is "seven million, six hundred forty thousand, four hundred fifty-one".