61940090 has 16 divisors (see below), whose sum is σ = 111624480. Its totient is φ = 24746640.

The previous prime is 61940089. The next prime is 61940107. The reversal of 61940090 is 9004916.

61940090 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, 6521 + ... + 12899.

It is an arithmetic number, because the mean of its divisors is an integer number (6976530).

Almost surely, 2^61940090 is an apocalyptic number.

61940090 is a deficient number, since it is larger than the sum of its proper divisors (49684390).

61940090 is a wasteful number, since it uses less digits than its factorization.

61940090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7357.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 61940090 is about 7870.2026657514. The cubic root of 61940090 is about 395.6616374723.

The spelling of 61940090 in words is "sixty-one million, nine hundred forty thousand, ninety".