7379640 has 64 divisors (see below), whose sum is σ = 24602400. Its totient is φ = 1967616.

The previous prime is 7379639. The next prime is 7379677. The reversal of 7379640 is 469737.

7379640 is a `hidden beast` number, since 7 + 3 + 7 + 9 + 640 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7379595 and 7379604.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2337 + ... + 4496.

Almost surely, 2^7379640 is an apocalyptic number.

It is an amenable number.

7379640 is an abundant number, since it is smaller than the sum of its proper divisors (17222760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7379640 is a wasteful number, since it uses less digits than its factorization.

7379640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6853 (or 6843 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 7379640 is about 2716.5492817175. The cubic root of 7379640 is about 194.6906337122.

Subtracting from 7379640 its reverse (469737), we obtain a triangular number (6909903 = T₃₇₁₇).

The spelling of 7379640 in words is "seven million, three hundred seventy-nine thousand, six hundred forty".