697878890 has 16 divisors (see below), whose sum is σ = 1272084480. Its totient is φ = 275617680.

The previous prime is 697878887. The next prime is 697878919. The reversal of 697878890 is 98878796.

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, 440906 + ... + 442485.

It is an arithmetic number, because the mean of its divisors is an integer number (79505280).

Almost surely, 2^697878890 is an apocalyptic number.

697878890 is a deficient number, since it is larger than the sum of its proper divisors (574205590).

697878890 is a wasteful number, since it uses less digits than its factorization.

697878890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883477.

The product of its (nonzero) digits is 12192768, while the sum is 62.

The square root of 697878890 is about 26417.3974872621. The cubic root of 697878890 is about 887.0062648188.

The spelling of 697878890 in words is "six hundred ninety-seven million, eight hundred seventy-eight thousand, eight hundred ninety".