61370778 has 16 divisors (see below), whose sum is σ = 140276160. Its totient is φ = 17534496.

The previous prime is 61370759. The next prime is 61370801. The reversal of 61370778 is 87707316.

61370778 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 730563 + ... + 730646.

It is an arithmetic number, because the mean of its divisors is an integer number (8767260).

Almost surely, 2^61370778 is an apocalyptic number.

61370778 is an abundant number, since it is smaller than the sum of its proper divisors (78905382).

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

61370778 is a wasteful number, since it uses less digits than its factorization.

61370778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461221.

The product of its (nonzero) digits is 49392, while the sum is 39.

The square root of 61370778 is about 7833.9503444941. The cubic root of 61370778 is about 394.4456851174.

The spelling of 61370778 in words is "sixty-one million, three hundred seventy thousand, seven hundred seventy-eight".