97865890 has 16 divisors (see below), whose sum is σ = 176274432. Its totient is φ = 39120624.

The previous prime is 97865863. The next prime is 97865947. The reversal of 97865890 is 9856879.

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, 22687 + ... + 26653.

It is an arithmetic number, because the mean of its divisors is an integer number (11017152).

Almost surely, 2^97865890 is an apocalyptic number.

97865890 is a deficient number, since it is larger than the sum of its proper divisors (78408542).

97865890 is a wasteful number, since it uses less digits than its factorization.

97865890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6441.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The square root of 97865890 is about 9892.7190397787. The cubic root of 97865890 is about 460.8332251685.

The spelling of 97865890 in words is "ninety-seven million, eight hundred sixty-five thousand, eight hundred ninety".