61390692 has 36 divisors (see below), whose sum is σ = 169290576. Its totient is φ = 18603120.

The previous prime is 61390673. The next prime is 61390697. The reversal of 61390692 is 29609316.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (61390697) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77118 + ... + 77909.

It is an arithmetic number, because the mean of its divisors is an integer number (4702516).

Almost surely, 2^61390692 is an apocalyptic number.

It is an amenable number.

61390692 is an abundant number, since it is smaller than the sum of its proper divisors (107899884).

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

61390692 is a wasteful number, since it uses less digits than its factorization.

61390692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155048 (or 155043 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 61390692 is about 7835.2212476739. The cubic root of 61390692 is about 394.4883446271.

The spelling of 61390692 in words is "sixty-one million, three hundred ninety thousand, six hundred ninety-two".