7040239664 has 20 divisors (see below), whose sum is σ = 13871660520. Its totient is φ = 3460456320.

The previous prime is 7040239649. The next prime is 7040239691. The reversal of 7040239664 is 4669320407.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3727997 + ... + 3729884.

It is an arithmetic number, because the mean of its divisors is an integer number (693583026).

Almost surely, 2^7040239664 is an apocalyptic number.

It is an amenable number.

7040239664 is a deficient number, since it is larger than the sum of its proper divisors (6831420856).

7040239664 is a wasteful number, since it uses less digits than its factorization.

7040239664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7457948 (or 7457942 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 41.

The square root of 7040239664 is about 83906.1360330697. The cubic root of 7040239664 is about 1916.5896912686.

The spelling of 7040239664 in words is "seven billion, forty million, two hundred thirty-nine thousand, six hundred sixty-four".