61534988 has 6 divisors (see below), whose sum is σ = 107686236. Its totient is φ = 30767492.

The previous prime is 61534943. The next prime is 61535003. The reversal of 61534988 is 88943516.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7691870 + ... + 7691877.

It is an arithmetic number, because the mean of its divisors is an integer number (17947706).

Almost surely, 2^61534988 is an apocalyptic number.

It is an amenable number.

61534988 is a deficient number, since it is larger than the sum of its proper divisors (46151248).

61534988 is a wasteful number, since it uses less digits than its factorization.

61534988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15383751 (or 15383749 counting only the distinct ones).

The product of its digits is 207360, while the sum is 44.

The square root of 61534988 is about 7844.4240068981. The cubic root of 61534988 is about 394.7971783613.

The spelling of 61534988 in words is "sixty-one million, five hundred thirty-four thousand, nine hundred eighty-eight".