215240623 has 8 divisors (see below), whose sum is σ = 231916608. Its totient is φ = 198581664.

The previous prime is 215240609. The next prime is 215240633. The reversal of 215240623 is 326042512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 215240623 - 2⁵ = 215240591 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215240633) 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 7 ways as a sum of consecutive naturals, for example, 36561 + ... + 42037.

It is an arithmetic number, because the mean of its divisors is an integer number (28989576).

Almost surely, 2^215240623 is an apocalyptic number.

215240623 is a deficient number, since it is larger than the sum of its proper divisors (16675985).

215240623 is a wasteful number, since it uses less digits than its factorization.

215240623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8513.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 215240623 is about 14671.0811803357. The cubic root of 215240623 is about 599.2960475561.

The spelling of 215240623 in words is "two hundred fifteen million, two hundred forty thousand, six hundred twenty-three".