215902063 has 18 divisors (see below), whose sum is σ = 238465104. Its totient is φ = 195382512.

The previous prime is 215902061. The next prime is 215902069. The reversal of 215902063 is 360209512.

It is not a de Polignac number, because 215902063 - 2¹ = 215902061 is a prime.

It is a super-2 number, since 2×215902063² = 93227401615311938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215902061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 588106 + ... + 588472.

Almost surely, 2^215902063 is an apocalyptic number.

215902063 is a deficient number, since it is larger than the sum of its proper divisors (22563041).

215902063 is an equidigital number, since it uses as much as digits as its factorization.

215902063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 439 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 215902063 is about 14693.6061945324. The cubic root of 215902063 is about 599.9093038836.

It can be divided in two parts, 21590 and 2063, that added together give a triangular number (23653 = T₂₁₇).

The spelling of 215902063 in words is "two hundred fifteen million, nine hundred two thousand, sixty-three".