7402789664 has 24 divisors (see below), whose sum is σ = 14581981260. Its totient is φ = 3699429376.

The previous prime is 7402789631. The next prime is 7402789673. The reversal of 7402789664 is 4669872047.

It can be written as a sum of positive squares in 2 ways, for example, as 6332976400 + 1069813264 = 79580^2 + 32708^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752 + ... + 121680.

Almost surely, 2^7402789664 is an apocalyptic number.

It is an amenable number.

7402789664 is a deficient number, since it is larger than the sum of its proper divisors (7179191596).

7402789664 is a wasteful number, since it uses less digits than its factorization.

7402789664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122852 (or 122844 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 53.

The square root of 7402789664 is about 86039.4657352078. The cubic root of 7402789664 is about 1948.9400036973.

The spelling of 7402789664 in words is "seven billion, four hundred two million, seven hundred eighty-nine thousand, six hundred sixty-four".