669490900797 has 32 divisors (see below), whose sum is σ = 924769751040. Its totient is φ = 430546818240.

The previous prime is 669490900789. The next prime is 669490900823. The reversal of 669490900797 is 797009094966.

It is not a de Polignac number, because 669490900797 - 2³ = 669490900789 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669490900297) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40966854 + ... + 40983192.

It is an arithmetic number, because the mean of its divisors is an integer number (28899054720).

Almost surely, 2^669490900797 is an apocalyptic number.

It is an amenable number.

669490900797 is a deficient number, since it is larger than the sum of its proper divisors (255278850243).

669490900797 is a wasteful number, since it uses less digits than its factorization.

669490900797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20553.

The product of its (nonzero) digits is 46294416, while the sum is 66.

The spelling of 669490900797 in words is "six hundred sixty-nine billion, four hundred ninety million, nine hundred thousand, seven hundred ninety-seven".