897391580 has 48 divisors (see below), whose sum is σ = 1997835840. Its totient is φ = 337425408.

The previous prime is 897391567. The next prime is 897391591. The reversal of 897391580 is 85193798.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529214 + ... + 530906.

It is an arithmetic number, because the mean of its divisors is an integer number (41621580).

Almost surely, 2^897391580 is an apocalyptic number.

It is an amenable number.

897391580 is an abundant number, since it is smaller than the sum of its proper divisors (1100444260).

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

897391580 is a wasteful number, since it uses less digits than its factorization.

897391580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278 (or 3276 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 50.

The square root of 897391580 is about 29956.4947882759. The cubic root of 897391580 is about 964.5557406327. Note that the first 3 decimals are identical.

It can be divided in two parts, 89739 and 1580, that added together give a palindrome (91319).

The spelling of 897391580 in words is "eight hundred ninety-seven million, three hundred ninety-one thousand, five hundred eighty".