213689465 has 32 divisors (see below), whose sum is σ = 287179776. Its totient is φ = 151335360.

The previous prime is 213689461. The next prime is 213689471. The reversal of 213689465 is 564986312.

It is not a de Polignac number, because 213689465 - 2² = 213689461 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (213689461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 379274 + ... + 379836.

It is an arithmetic number, because the mean of its divisors is an integer number (8974368).

Almost surely, 2^213689465 is an apocalyptic number.

It is an amenable number.

213689465 is a deficient number, since it is larger than the sum of its proper divisors (73490311).

213689465 is a wasteful number, since it uses less digits than its factorization.

213689465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749.

The product of its digits is 311040, while the sum is 44.

The square root of 213689465 is about 14618.1211172982. The cubic root of 213689465 is about 597.8529418071.

The spelling of 213689465 in words is "two hundred thirteen million, six hundred eighty-nine thousand, four hundred sixty-five".