61472978 has 16 divisors (see below), whose sum is σ = 105503424. Its totient is φ = 26315280.

The previous prime is 61472963. The next prime is 61472987. The reversal of 61472978 is 87927416.

It is a Curzon 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, 13673 + ... + 17603.

It is an arithmetic number, because the mean of its divisors is an integer number (6593964).

Almost surely, 2^61472978 is an apocalyptic number.

61472978 is a deficient number, since it is larger than the sum of its proper divisors (44030446).

61472978 is a wasteful number, since it uses less digits than its factorization.

61472978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5057.

The product of its digits is 169344, while the sum is 44.

The square root of 61472978 is about 7840.4705215950. The cubic root of 61472978 is about 394.6645188674.

The spelling of 61472978 in words is "sixty-one million, four hundred seventy-two thousand, nine hundred seventy-eight".