6994367656 has 8 divisors (see below), whose sum is σ = 13114439370. Its totient is φ = 3497183824.

The previous prime is 6994367629. The next prime is 6994367657. The reversal of 6994367656 is 6567634996.

It can be written as a sum of positive squares in only one way, i.e., 4921022500 + 2073345156 = 70150^2 + 45534^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 6994367594 and 6994367603.

It is not an unprimeable number, because it can be changed into a prime (6994367657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 437147971 + ... + 437147986.

Almost surely, 2^6994367656 is an apocalyptic number.

It is an amenable number.

6994367656 is a deficient number, since it is larger than the sum of its proper divisors (6120071714).

6994367656 is a wasteful number, since it uses less digits than its factorization.

6994367656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 874295963 (or 874295959 counting only the distinct ones).

The product of its digits is 44089920, while the sum is 61.

The square root of 6994367656 is about 83632.3361864297. The cubic root of 6994367656 is about 1912.4179838438.

The spelling of 6994367656 in words is "six billion, nine hundred ninety-four million, three hundred sixty-seven thousand, six hundred fifty-six".