64531461 has 8 divisors (see below), whose sum is σ = 86228064. Its totient is φ = 42927920.

The previous prime is 64531361. The next prime is 64531471. The reversal of 64531461 is 16413546.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64531461 - 2¹⁷ = 64400389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64531471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21630 + ... + 24431.

It is an arithmetic number, because the mean of its divisors is an integer number (10778508).

Almost surely, 2^64531461 is an apocalyptic number.

It is an amenable number.

64531461 is a deficient number, since it is larger than the sum of its proper divisors (21696603).

64531461 is a wasteful number, since it uses less digits than its factorization.

64531461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46531.

The product of its digits is 8640, while the sum is 30.

The square root of 64531461 is about 8033.1476396242. The cubic root of 64531461 is about 401.1041596906.

The spelling of 64531461 in words is "sixty-four million, five hundred thirty-one thousand, four hundred sixty-one".