61508064 has 48 divisors (see below), whose sum is σ = 162062208. Its totient is φ = 20426112.

The previous prime is 61508059. The next prime is 61508093. The reversal of 61508064 is 46080516.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28429 + ... + 30515.

It is an arithmetic number, because the mean of its divisors is an integer number (3376296).

Almost surely, 2^61508064 is an apocalyptic number.

It is an amenable number.

61508064 is an abundant number, since it is smaller than the sum of its proper divisors (100554144).

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

61508064 is a wasteful number, since it uses less digits than its factorization.

61508064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407 (or 2399 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 61508064 is about 7842.7076956878. The cubic root of 61508064 is about 394.7395901488.

The spelling of 61508064 in words is "sixty-one million, five hundred eight thousand, sixty-four".