397610780 has 24 divisors (see below), whose sum is σ = 954266208. Its totient is φ = 136323648.

The previous prime is 397610767. The next prime is 397610789. The reversal of 397610780 is 87016793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (397610789) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1419899 + ... + 1420178.

It is an arithmetic number, because the mean of its divisors is an integer number (39761092).

Almost surely, 2^397610780 is an apocalyptic number.

It is an amenable number.

397610780 is an abundant number, since it is smaller than the sum of its proper divisors (556655428).

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

397610780 is a wasteful number, since it uses less digits than its factorization.

397610780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2840093 (or 2840091 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 41.

The square root of 397610780 is about 19940.1800393076. The cubic root of 397610780 is about 735.3363755654.

The spelling of 397610780 in words is "three hundred ninety-seven million, six hundred ten thousand, seven hundred eighty".