61006988 has 24 divisors (see below), whose sum is σ = 122771712. Its totient is φ = 25983504.

The previous prime is 61006949. The next prime is 61007027. The reversal of 61006988 is 88960016.

It is an interprime number because it is at equal distance from previous prime (61006949) and next prime (61007027).

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, 2120 + ... + 11247.

It is an arithmetic number, because the mean of its divisors is an integer number (5115488).

Almost surely, 2^61006988 is an apocalyptic number.

It is an amenable number.

61006988 is an abundant number, since it is smaller than the sum of its proper divisors (61764724).

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

61006988 is a wasteful number, since it uses less digits than its factorization.

61006988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13541 (or 13539 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 61006988 is about 7810.6970239538. The cubic root of 61006988 is about 393.6647495627.

The spelling of 61006988 in words is "sixty-one million, six thousand, nine hundred eighty-eight".