213630757 has 8 divisors (see below), whose sum is σ = 218445984. Its totient is φ = 208844688.

The previous prime is 213630749. The next prime is 213630779. The reversal of 213630757 is 757036312.

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 213630757 - 2³ = 213630749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213630707) 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, 7878 + ... + 22120.

It is an arithmetic number, because the mean of its divisors is an integer number (27305748).

Almost surely, 2^213630757 is an apocalyptic number.

It is an amenable number.

213630757 is a deficient number, since it is larger than the sum of its proper divisors (4815227).

213630757 is a wasteful number, since it uses less digits than its factorization.

213630757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14579.

The product of its (nonzero) digits is 26460, while the sum is 34.

The square root of 213630757 is about 14616.1129237564. The cubic root of 213630757 is about 597.7981863932.

The spelling of 213630757 in words is "two hundred thirteen million, six hundred thirty thousand, seven hundred fifty-seven".