264051646 has 4 divisors (see below), whose sum is σ = 396077472. Its totient is φ = 132025822.

The previous prime is 264051643. The next prime is 264051659. The reversal of 264051646 is 646150462.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264051643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66012910 + ... + 66012913.

It is an arithmetic number, because the mean of its divisors is an integer number (99019368).

Almost surely, 2^264051646 is an apocalyptic number.

264051646 is a deficient number, since it is larger than the sum of its proper divisors (132025826).

264051646 is a wasteful number, since it uses less digits than its factorization.

264051646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132025825.

The product of its (nonzero) digits is 34560, while the sum is 34.

The square root of 264051646 is about 16249.6660273373. Note that the first 3 decimals coincide. The cubic root of 264051646 is about 641.5486956751.

The spelling of 264051646 in words is "two hundred sixty-four million, fifty-one thousand, six hundred forty-six".