264612021 has 32 divisors (see below), whose sum is σ = 385648128. Its totient is φ = 160742400.

The previous prime is 264611983. The next prime is 264612043. The reversal of 264612021 is 120216462.

It is not a de Polignac number, because 264612021 - 2²⁷ = 130394293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 264611982 and 264612000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264612121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 241551 + ... + 242643.

It is an arithmetic number, because the mean of its divisors is an integer number (12051504).

Almost surely, 2^264612021 is an apocalyptic number.

It is an amenable number.

264612021 is a deficient number, since it is larger than the sum of its proper divisors (121036107).

264612021 is a wasteful number, since it uses less digits than its factorization.

264612021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1261.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 264612021 is about 16266.8995509286. The cubic root of 264612021 is about 642.0022102776.

Adding to 264612021 its reverse (120216462), we get a palindrome (384828483).

It can be divided in two parts, 26461 and 2021, that added together give a palindrome (28482).

The spelling of 264612021 in words is "two hundred sixty-four million, six hundred twelve thousand, twenty-one".