213965487 has 24 divisors (see below), whose sum is σ = 318392880. Its totient is φ = 138360960.

The previous prime is 213965461. The next prime is 213965489. The reversal of 213965487 is 784569312.

213965487 is a `hidden beast` number, since 2 + 13 + 96 + 548 + 7 = 666.

It is not a de Polignac number, because 213965487 - 2⁸ = 213965231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213965489) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 135412 + ... + 136982.

It is an arithmetic number, because the mean of its divisors is an integer number (13266370).

Almost surely, 2^213965487 is an apocalyptic number.

213965487 is a deficient number, since it is larger than the sum of its proper divisors (104427393).

213965487 is a wasteful number, since it uses less digits than its factorization.

213965487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023 (or 2020 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 213965487 is about 14627.5591607076. The cubic root of 213965487 is about 598.1102459649.

The spelling of 213965487 in words is "two hundred thirteen million, nine hundred sixty-five thousand, four hundred eighty-seven".