215366013 has 16 divisors (see below), whose sum is σ = 337829760. Its totient is φ = 135131328.

The previous prime is 215366009. The next prime is 215366017. The reversal of 215366013 is 310663512.

215366013 is a `hidden beast` number, since 2 + 1 + 53 + 6 + 601 + 3 = 666.

It is an interprime number because it is at equal distance from previous prime (215366009) and next prime (215366017).

It is not a de Polignac number, because 215366013 - 2² = 215366009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215366017) 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, 234145 + ... + 235062.

It is an arithmetic number, because the mean of its divisors is an integer number (21114360).

Almost surely, 2^215366013 is an apocalyptic number.

It is an amenable number.

215366013 is a deficient number, since it is larger than the sum of its proper divisors (122463747).

215366013 is a wasteful number, since it uses less digits than its factorization.

215366013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469233 (or 469227 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 215366013 is about 14675.3539309960. The cubic root of 215366013 is about 599.4123997311.

The spelling of 215366013 in words is "two hundred fifteen million, three hundred sixty-six thousand, thirteen".