7640959 has 6 divisors (see below), whose sum is σ = 7762640. Its totient is φ = 7519980.

The previous prime is 7640933. The next prime is 7640987. The reversal of 7640959 is 9590467.

It is a de Polignac number, because none of the positive numbers 2^k-7640959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7640909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24414 + ... + 24724.

Almost surely, 2^7640959 is an apocalyptic number.

7640959 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

7640959 is a deficient number, since it is larger than the sum of its proper divisors (121681).

7640959 is an frugal number, since it uses more digits than its factorization.

7640959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 701 (or 390 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 7640959 is about 2764.2284637851. The cubic root of 7640959 is about 196.9620805334.

The spelling of 7640959 in words is "seven million, six hundred forty thousand, nine hundred fifty-nine".