64558461 has 24 divisors (see below), whose sum is σ = 97683712. Its totient is φ = 37857600.

The previous prime is 64558457. The next prime is 64558463. The reversal of 64558461 is 16485546.

It is a happy number.

It is not a de Polignac number, because 64558461 - 2² = 64558457 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 (64558463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8385 + ... + 14121.

Almost surely, 2^64558461 is an apocalyptic number.

It is an amenable number.

64558461 is a deficient number, since it is larger than the sum of its proper divisors (33125251).

64558461 is a wasteful number, since it uses less digits than its factorization.

64558461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5793 (or 5782 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The square root of 64558461 is about 8034.8280006482. The cubic root of 64558461 is about 401.1600926268.

The spelling of 64558461 in words is "sixty-four million, five hundred fifty-eight thousand, four hundred sixty-one".