6320711978 has 24 divisors (see below), whose sum is σ = 11035658052. Its totient is φ = 2707240704.

The previous prime is 6320711977. The next prime is 6320711981. The reversal of 6320711978 is 8791170236.

It can be written as a sum of positive squares in 2 ways, for example, as 6300073129 + 20638849 = 79373^2 + 4543^2 .

It is not an unprimeable number, because it can be changed into a prime (6320711977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 151226 + ... + 188442.

Almost surely, 2^6320711978 is an apocalyptic number.

6320711978 is a deficient number, since it is larger than the sum of its proper divisors (4714946074).

6320711978 is a wasteful number, since it uses less digits than its factorization.

6320711978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38966 (or 38959 counting only the distinct ones).

The product of its (nonzero) digits is 127008, while the sum is 44.

The square root of 6320711978 is about 79502.9054689198. The cubic root of 6320711978 is about 1848.9365183531.

The spelling of 6320711978 in words is "six billion, three hundred twenty million, seven hundred eleven thousand, nine hundred seventy-eight".