61079988 has 24 divisors (see below), whose sum is σ = 144123840. Its totient is φ = 20130880.

The previous prime is 61079969. The next prime is 61079989. The reversal of 61079988 is 88997016.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61079989) 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, 27528 + ... + 29663.

It is an arithmetic number, because the mean of its divisors is an integer number (6005160).

Almost surely, 2^61079988 is an apocalyptic number.

It is an amenable number.

61079988 is an abundant number, since it is smaller than the sum of its proper divisors (83043852).

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

61079988 is a wasteful number, since it uses less digits than its factorization.

61079988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57287 (or 57285 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The square root of 61079988 is about 7815.3687053139. The cubic root of 61079988 is about 393.8217046536.

The spelling of 61079988 in words is "sixty-one million, seventy-nine thousand, nine hundred eighty-eight".