697447999720 has 32 divisors (see below), whose sum is σ = 1569282959520. Its totient is φ = 278974762560.

The previous prime is 697447999687. The next prime is 697447999741. The reversal of 697447999720 is 27999744796.

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, 3762739 + ... + 3943741.

It is an arithmetic number, because the mean of its divisors is an integer number (49040092485).

Almost surely, 2^697447999720 is an apocalyptic number.

It is an amenable number.

697447999720 is an abundant number, since it is smaller than the sum of its proper divisors (871834959800).

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

697447999720 is a wasteful number, since it uses less digits than its factorization.

697447999720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277345 (or 277341 counting only the distinct ones).

The product of its (nonzero) digits is 432081216, while the sum is 73.

The spelling of 697447999720 in words is "six hundred ninety-seven billion, four hundred forty-seven million, nine hundred ninety-nine thousand, seven hundred twenty".