264615421 has 16 divisors (see below), whose sum is σ = 327659904. Its totient is φ = 208502784.

The previous prime is 264615419. The next prime is 264615427. The reversal of 264615421 is 124516462.

It is a happy number.

It is not a de Polignac number, because 264615421 - 2¹ = 264615419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264615427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20740 + ... + 30973.

It is an arithmetic number, because the mean of its divisors is an integer number (20478744).

Almost surely, 2^264615421 is an apocalyptic number.

It is an amenable number.

264615421 is a deficient number, since it is larger than the sum of its proper divisors (63044483).

264615421 is a wasteful number, since it uses less digits than its factorization.

264615421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51780.

The product of its digits is 11520, while the sum is 31.

The square root of 264615421 is about 16267.0040572934. The cubic root of 264615421 is about 642.0049599614.

The spelling of 264615421 in words is "two hundred sixty-four million, six hundred fifteen thousand, four hundred twenty-one".