264677921 has 4 divisors (see below), whose sum is σ = 265785600. Its totient is φ = 263570244.

The previous prime is 264677911. The next prime is 264677927. The reversal of 264677921 is 129776462.

264677921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 129776462 = 2 ⋅64888231.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-264677921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (264677927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 553481 + ... + 553958.

It is an arithmetic number, because the mean of its divisors is an integer number (66446400).

Almost surely, 2^264677921 is an apocalyptic number.

It is an amenable number.

264677921 is a deficient number, since it is larger than the sum of its proper divisors (1107679).

264677921 is a wasteful number, since it uses less digits than its factorization.

264677921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1107678.

The product of its digits is 254016, while the sum is 44.

The square root of 264677921 is about 16268.9250105838. The cubic root of 264677921 is about 642.0555014242.

The spelling of 264677921 in words is "two hundred sixty-four million, six hundred seventy-seven thousand, nine hundred twenty-one".