213497770 has 32 divisors (see below), whose sum is σ = 395756928. Its totient is φ = 82865088.

The previous prime is 213497761. The next prime is 213497773. The reversal of 213497770 is 77794312.

It is not an unprimeable number, because it can be changed into a prime (213497773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216699 + ... + 217681.

It is an arithmetic number, because the mean of its divisors is an integer number (12367404).

Almost surely, 2^213497770 is an apocalyptic number.

213497770 is a deficient number, since it is larger than the sum of its proper divisors (182259158).

213497770 is a wasteful number, since it uses less digits than its factorization.

213497770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1614.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 213497770 is about 14611.5628869741. The cubic root of 213497770 is about 597.6741157918.

The spelling of 213497770 in words is "two hundred thirteen million, four hundred ninety-seven thousand, seven hundred seventy".