64503061 has 6 divisors (see below), whose sum is σ = 75034230. Its totient is φ = 55288296.

The previous prime is 64503037. The next prime is 64503077. The reversal of 64503061 is 16030546.

It can be written as a sum of positive squares in only one way, i.e., 43480836 + 21022225 = 6594^2 + 4585^2 .

It is not a de Polignac number, because 64503061 - 2¹⁵ = 64470293 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 (64503961) 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, 658146 + ... + 658243.

It is an arithmetic number, because the mean of its divisors is an integer number (12505705).

Almost surely, 2^64503061 is an apocalyptic number.

It is an amenable number.

64503061 is a deficient number, since it is larger than the sum of its proper divisors (10531169).

64503061 is a wasteful number, since it uses less digits than its factorization.

64503061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316403 (or 1316396 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 64503061 is about 8031.3797693796. The cubic root of 64503061 is about 401.0453096896.

The spelling of 64503061 in words is "sixty-four million, five hundred three thousand, sixty-one".