61077904 has 10 divisors (see below), whose sum is σ = 118338470. Its totient is φ = 30538944.

The previous prime is 61077883. The next prime is 61077911. The reversal of 61077904 is 40977016.

It can be written as a sum of positive squares in only one way, i.e., 46240000 + 14837904 = 6800^2 + 3852^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 61077904.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1908669 + ... + 1908700.

It is an arithmetic number, because the mean of its divisors is an integer number (11833847).

Almost surely, 2^61077904 is an apocalyptic number.

It is an amenable number.

61077904 is a deficient number, since it is larger than the sum of its proper divisors (57260566).

61077904 is a wasteful number, since it uses less digits than its factorization.

61077904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3817377 (or 3817371 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 61077904 is about 7815.2353771336. The cubic root of 61077904 is about 393.8172256428.

The spelling of 61077904 in words is "sixty-one million, seventy-seven thousand, nine hundred four".