61264005 has 32 divisors (see below), whose sum is σ = 113228928. Its totient is φ = 27955200.

The previous prime is 61264001. The next prime is 61264013. The reversal of 61264005 is 50046216.

It is not a de Polignac number, because 61264005 - 2² = 61264001 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61264001) 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, 8116 + ... + 13725.

It is an arithmetic number, because the mean of its divisors is an integer number (3538404).

Almost surely, 2^61264005 is an apocalyptic number.

It is an amenable number.

61264005 is a deficient number, since it is larger than the sum of its proper divisors (51964923).

61264005 is a wasteful number, since it uses less digits than its factorization.

61264005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21877.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 61264005 is about 7827.1326167378. The cubic root of 61264005 is about 394.2167998687.

The spelling of 61264005 in words is "sixty-one million, two hundred sixty-four thousand, five".