213695977 has 16 divisors (see below), whose sum is σ = 240698304. Its totient is φ = 188032000.

The previous prime is 213695971. The next prime is 213695987. The reversal of 213695977 is 779596312.

It is a cyclic number.

It is not a de Polignac number, because 213695977 - 2⁷ = 213695849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 213695977.

It is not an unprimeable number, because it can be changed into a prime (213695971) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57273 + ... + 60889.

It is an arithmetic number, because the mean of its divisors is an integer number (15043644).

Almost surely, 2^213695977 is an apocalyptic number.

It is an amenable number.

213695977 is a deficient number, since it is larger than the sum of its proper divisors (27002327).

213695977 is a wasteful number, since it uses less digits than its factorization.

213695977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3800.

The product of its digits is 714420, while the sum is 49.

The square root of 213695977 is about 14618.3438528446. The cubic root of 213695977 is about 597.8590147610.

The spelling of 213695977 in words is "two hundred thirteen million, six hundred ninety-five thousand, nine hundred seventy-seven".