669469444674 has 16 divisors (see below), whose sum is σ = 1351452338208. Its totient is φ = 221070906752.

The previous prime is 669469444661. The next prime is 669469444687. The reversal of 669469444674 is 476444964966.

It is an interprime number because it is at equal distance from previous prime (669469444661) and next prime (669469444687).

It is a super-2 number, since 2×669469444674² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 669469444599 and 669469444608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 521393007 + ... + 521394290.

It is an arithmetic number, because the mean of its divisors is an integer number (84465771138).

Almost surely, 2^669469444674 is an apocalyptic number.

669469444674 is an abundant number, since it is smaller than the sum of its proper divisors (681982893534).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669469444674 is a wasteful number, since it uses less digits than its factorization.

669469444674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042787409.

The product of its digits is 752467968, while the sum is 69.

The spelling of 669469444674 in words is "six hundred sixty-nine billion, four hundred sixty-nine million, four hundred forty-four thousand, six hundred seventy-four".