264606405 has 32 divisors (see below), whose sum is σ = 487686144. Its totient is φ = 120004416.

The previous prime is 264606401. The next prime is 264606427. The reversal of 264606405 is 504606462.

It is not a de Polignac number, because 264606405 - 2² = 264606401 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264606401) 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, 3414 + ... + 23256.

It is an arithmetic number, because the mean of its divisors is an integer number (15240192).

Almost surely, 2^264606405 is an apocalyptic number.

It is an amenable number.

264606405 is a deficient number, since it is larger than the sum of its proper divisors (223079739).

264606405 is a wasteful number, since it uses less digits than its factorization.

264606405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19985.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 264606405 is about 16266.7269295332. The cubic root of 264606405 is about 641.9976683954.

The spelling of 264606405 in words is "two hundred sixty-four million, six hundred six thousand, four hundred five".