64479461 has 4 divisors (see below), whose sum is σ = 64950252. Its totient is φ = 64008672.

The previous prime is 64479451. The next prime is 64479497. The reversal of 64479461 is 16497446.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27196225 + 37283236 = 5215^2 + 6106^2 .

It is a cyclic number.

It is not a de Polignac number, because 64479461 - 2¹⁸ = 64217317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64479421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 235190 + ... + 235463.

It is an arithmetic number, because the mean of its divisors is an integer number (16237563).

Almost surely, 2^64479461 is an apocalyptic number.

It is an amenable number.

64479461 is a deficient number, since it is larger than the sum of its proper divisors (470791).

64479461 is a wasteful number, since it uses less digits than its factorization.

64479461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470790.

The product of its digits is 145152, while the sum is 41.

The square root of 64479461 is about 8029.9103980057. The cubic root of 64479461 is about 400.9963930248.

The spelling of 64479461 in words is "sixty-four million, four hundred seventy-nine thousand, four hundred sixty-one".