248564631 has 64 divisors (see below), whose sum is σ = 415872000. Its totient is φ = 128894976.

The previous prime is 248564609. The next prime is 248564651. The reversal of 248564631 is 136465842.

It is not a de Polignac number, because 248564631 - 2¹⁴ = 248548247 is a prime.

It is a super-2 number, since 2×248564631² = 123568751568332322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 248564631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248564651) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1668145 + ... + 1668293.

It is an arithmetic number, because the mean of its divisors is an integer number (6498000).

Almost surely, 2^248564631 is an apocalyptic number.

248564631 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

248564631 is a deficient number, since it is larger than the sum of its proper divisors (167307369).

248564631 is a wasteful number, since it uses less digits than its factorization.

248564631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328.

The product of its digits is 138240, while the sum is 39.

The square root of 248564631 is about 15765.9326080001. The cubic root of 248564631 is about 628.7525757740.

The spelling of 248564631 in words is "two hundred forty-eight million, five hundred sixty-four thousand, six hundred thirty-one".