64422605 has 32 divisors (see below), whose sum is σ = 88923744. Its totient is φ = 44384256.

The previous prime is 64422569. The next prime is 64422623. The reversal of 64422605 is 50622446.

It can be written as a sum of positive squares in 16 ways, for example, as 9351364 + 55071241 = 3058^2 + 7421^2 .

It is a cyclic number.

It is not a de Polignac number, because 64422605 - 2¹⁸ = 64160461 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 190997 + ... + 191333.

It is an arithmetic number, because the mean of its divisors is an integer number (2778867).

Almost surely, 2^64422605 is an apocalyptic number.

64422605 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

64422605 is a deficient number, since it is larger than the sum of its proper divisors (24501139).

64422605 is a wasteful number, since it uses less digits than its factorization.

64422605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 64422605 is about 8026.3693535745. The cubic root of 64422605 is about 400.8784962816.

The spelling of 64422605 in words is "sixty-four million, four hundred twenty-two thousand, six hundred five".