61578708 has 24 divisors (see below), whose sum is σ = 143855712. Its totient is φ = 20501664.

The previous prime is 61578701. The next prime is 61578733. The reversal of 61578708 is 80787516.

It is a self number, because there is not a number n which added to its sum of digits gives 61578708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61578701) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9391 + ... + 14537.

It is an arithmetic number, because the mean of its divisors is an integer number (5993988).

Almost surely, 2^61578708 is an apocalyptic number.

It is an amenable number.

61578708 is an abundant number, since it is smaller than the sum of its proper divisors (82277004).

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

61578708 is a wasteful number, since it uses less digits than its factorization.

61578708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6151 (or 6149 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 61578708 is about 7847.2102049072. The cubic root of 61578708 is about 394.8906560558.

The spelling of 61578708 in words is "sixty-one million, five hundred seventy-eight thousand, seven hundred eight".