213740655 has 8 divisors (see below), whose sum is σ = 341985072. Its totient is φ = 113995008.

The previous prime is 213740627. The next prime is 213740663. The reversal of 213740655 is 556047312.

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

It is not a de Polignac number, because 213740655 - 2⁵ = 213740623 is a prime.

It is a congruent number.

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, 7124674 + ... + 7124703.

It is an arithmetic number, because the mean of its divisors is an integer number (42748134).

Almost surely, 2^213740655 is an apocalyptic number.

213740655 is a deficient number, since it is larger than the sum of its proper divisors (128244417).

213740655 is a wasteful number, since it uses less digits than its factorization.

213740655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14249385.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 213740655 is about 14619.8719214636. The cubic root of 213740655 is about 597.9006771952.

Adding to 213740655 its reverse (556047312), we get a palindrome (769787967).

The spelling of 213740655 in words is "two hundred thirteen million, seven hundred forty thousand, six hundred fifty-five".