64726506 has 32 divisors (see below), whose sum is σ = 154902720. Its totient is φ = 19915632.

The previous prime is 64726499. The next prime is 64726507. The reversal of 64726506 is 60562746.

64726506 is a `hidden beast` number, since 647 + 2 + 6 + 5 + 0 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (64726507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45400 + ... + 46803.

It is an arithmetic number, because the mean of its divisors is an integer number (4840710).

Almost surely, 2^64726506 is an apocalyptic number.

64726506 is an abundant number, since it is smaller than the sum of its proper divisors (90176214).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64726506 is a wasteful number, since it uses less digits than its factorization.

64726506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92227 (or 92221 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The square root of 64726506 is about 8045.2784911400. The cubic root of 64726506 is about 401.5078628980.

The spelling of 64726506 in words is "sixty-four million, seven hundred twenty-six thousand, five hundred six".