64065475 has 6 divisors (see below), whose sum is σ = 79441220. Its totient is φ = 51252360.

The previous prime is 64065461. The next prime is 64065479. The reversal of 64065475 is 57456046.

It is a happy number.

It is not a de Polignac number, because 64065475 - 2¹¹ = 64063427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64065479) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1281285 + ... + 1281334.

Almost surely, 2^64065475 is an apocalyptic number.

64065475 is a deficient number, since it is larger than the sum of its proper divisors (15375745).

64065475 is a wasteful number, since it uses less digits than its factorization.

64065475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562629 (or 2562624 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 37.

The square root of 64065475 is about 8004.0911414101. The cubic root of 64065475 is about 400.1363597598.

It can be divided in two parts, 6406 and 5475, that added together give a square (11881 = 109²).

The spelling of 64065475 in words is "sixty-four million, sixty-five thousand, four hundred seventy-five".