61043790 has 16 divisors (see below), whose sum is σ = 146505168. Its totient is φ = 16278336.

The previous prime is 61043783. The next prime is 61043831. The reversal of 61043790 is 9734016.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 2034793 = 61043790 / (6 + 1 + 0 + 4 + 3 + 7 + 9 + 0).

It is a congruent 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, 1017367 + ... + 1017426.

It is an arithmetic number, because the mean of its divisors is an integer number (9156573).

Almost surely, 2^61043790 is an apocalyptic number.

61043790 is an abundant number, since it is smaller than the sum of its proper divisors (85461378).

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

61043790 is a wasteful number, since it uses less digits than its factorization.

61043790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034803.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 61043790 is about 7813.0525404607. The cubic root of 61043790 is about 393.7438920695.

The spelling of 61043790 in words is "sixty-one million, forty-three thousand, seven hundred ninety".