690672506947 has 4 divisors (see below), whose sum is σ = 714488800320. Its totient is φ = 666856213576.

The previous prime is 690672506939. The next prime is 690672506957. The reversal of 690672506947 is 749605276096.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 690672506947 - 2³ = 690672506939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690672506957) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11908146643 + ... + 11908146700.

It is an arithmetic number, because the mean of its divisors is an integer number (178622200080).

Almost surely, 2^690672506947 is an apocalyptic number.

690672506947 is a deficient number, since it is larger than the sum of its proper divisors (23816293373).

690672506947 is a wasteful number, since it uses less digits than its factorization.

690672506947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23816293372.

The product of its (nonzero) digits is 34292160, while the sum is 61.

The spelling of 690672506947 in words is "six hundred ninety billion, six hundred seventy-two million, five hundred six thousand, nine hundred forty-seven".