64051605 has 12 divisors (see below), whose sum is σ = 111022860. Its totient is φ = 34160832.

The previous prime is 64051579. The next prime is 64051607. The reversal of 64051605 is 50615046.

It is a happy number.

64051605 is a `hidden beast` number, since 6 + 4 + 0 + 51 + 605 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 45724644 + 18326961 = 6762^2 + 4281^2 .

It is not a de Polignac number, because 64051605 - 2¹⁴ = 64035221 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64051607) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 711640 + ... + 711729.

It is an arithmetic number, because the mean of its divisors is an integer number (9251905).

Almost surely, 2^64051605 is an apocalyptic number.

It is an amenable number.

64051605 is a deficient number, since it is larger than the sum of its proper divisors (46971255).

64051605 is a wasteful number, since it uses less digits than its factorization.

64051605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1423380 (or 1423377 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 64051605 is about 8003.2246625969. The cubic root of 64051605 is about 400.1074815334.

The spelling of 64051605 in words is "sixty-four million, fifty-one thousand, six hundred five".