213204977 has 8 divisors (see below), whose sum is σ = 217342080. Its totient is φ = 209099520.

The previous prime is 213204941. The next prime is 213204991. The reversal of 213204977 is 779402312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 213204977 - 2⁸ = 213204721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213204907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5924 + ... + 21482.

It is an arithmetic number, because the mean of its divisors is an integer number (27167760).

Almost surely, 2^213204977 is an apocalyptic number.

It is an amenable number.

213204977 is a deficient number, since it is larger than the sum of its proper divisors (4137103).

213204977 is a wasteful number, since it uses less digits than its factorization.

213204977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15823.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 213204977 is about 14601.5402269761. The cubic root of 213204977 is about 597.4007720235.

The spelling of 213204977 in words is "two hundred thirteen million, two hundred four thousand, nine hundred seventy-seven".