61475865 has 24 divisors (see below), whose sum is σ = 108119424. Its totient is φ = 29805600.

The previous prime is 61475857. The next prime is 61475879. The reversal of 61475865 is 56857416.

It is not a de Polignac number, because 61475865 - 2³ = 61475857 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15121 + ... + 18750.

It is an arithmetic number, because the mean of its divisors is an integer number (4504976).

Almost surely, 2^61475865 is an apocalyptic number.

It is an amenable number.

61475865 is a deficient number, since it is larger than the sum of its proper divisors (46643559).

61475865 is a wasteful number, since it uses less digits than its factorization.

61475865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33901 (or 33890 counting only the distinct ones).

The product of its digits is 201600, while the sum is 42.

The square root of 61475865 is about 7840.6546282820. The cubic root of 61475865 is about 394.6706970759.

The spelling of 61475865 in words is "sixty-one million, four hundred seventy-five thousand, eight hundred sixty-five".