97655540 has 12 divisors (see below), whose sum is σ = 205076676. Its totient is φ = 39062208.

The previous prime is 97655527. The next prime is 97655567. The reversal of 97655540 is 4555679.

It can be written as a sum of positive squares in 2 ways, for example, as 37871716 + 59783824 = 6154^2 + 7732^2 .

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2441369 + ... + 2441408.

It is an arithmetic number, because the mean of its divisors is an integer number (17089723).

Almost surely, 2^97655540 is an apocalyptic number.

It is an amenable number.

97655540 is an abundant number, since it is smaller than the sum of its proper divisors (107421136).

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

97655540 is a wasteful number, since it uses less digits than its factorization.

97655540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4882786 (or 4882784 counting only the distinct ones).

The product of its (nonzero) digits is 189000, while the sum is 41.

The square root of 97655540 is about 9882.0817644867. The cubic root of 97655540 is about 460.5028213114.

The spelling of 97655540 in words is "ninety-seven million, six hundred fifty-five thousand, five hundred forty".