897849570090 has 64 divisors (see below), whose sum is σ = 2452939241472. Its totient is φ = 208197000000.

The previous prime is 897849570043. The next prime is 897849570091. The reversal of 897849570090 is 90075948798.

It is a super-2 number, since 2×897849570090² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is not an unprimeable number, because it can be changed into a prime (897849570091) 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, 59139286 + ... + 59154465.

It is an arithmetic number, because the mean of its divisors is an integer number (38327175648).

Almost surely, 2^897849570090 is an apocalyptic number.

897849570090 is an abundant number, since it is smaller than the sum of its proper divisors (1555089671382).

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

897849570090 is a wasteful number, since it uses less digits than its factorization.

897849570090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118293795.

The product of its (nonzero) digits is 45722880, while the sum is 66.

The spelling of 897849570090 in words is "eight hundred ninety-seven billion, eight hundred forty-nine million, five hundred seventy thousand, ninety".