61506064 has 20 divisors (see below), whose sum is σ = 119346156. Its totient is φ = 30707072.

The previous prime is 61506041. The next prime is 61506073. The reversal of 61506064 is 46060516.

It can be written as a sum of positive squares in 2 ways, for example, as 19360000 + 42146064 = 4400^2 + 6492^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9882 + ... + 14854.

Almost surely, 2^61506064 is an apocalyptic number.

It is an amenable number.

61506064 is a deficient number, since it is larger than the sum of its proper divisors (57840092).

61506064 is a wasteful number, since it uses less digits than its factorization.

61506064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5754 (or 5748 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 61506064 is about 7842.5801876678. The cubic root of 61506064 is about 394.7353116435.

The spelling of 61506064 in words is "sixty-one million, five hundred six thousand, sixty-four".