61508136 has 32 divisors (see below), whose sum is σ = 155721600. Its totient is φ = 20242560.

The previous prime is 61508131. The next prime is 61508137. The reversal of 61508136 is 63180516.

It is not an unprimeable number, because it can be changed into a prime (61508131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14325 + ... + 18116.

It is an arithmetic number, because the mean of its divisors is an integer number (4866300).

Almost surely, 2^61508136 is an apocalyptic number.

It is an amenable number.

61508136 is an abundant number, since it is smaller than the sum of its proper divisors (94213464).

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

61508136 is a wasteful number, since it uses less digits than its factorization.

61508136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32529 (or 32525 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 61508136 is about 7842.7122859378. The cubic root of 61508136 is about 394.7397441733.

The spelling of 61508136 in words is "sixty-one million, five hundred eight thousand, one hundred thirty-six".