61220994 has 16 divisors (see below), whose sum is σ = 122551968. Its totient is φ = 20388672.

The previous prime is 61220953. The next prime is 61221011. The reversal of 61220994 is 49902216.

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, 3849 + ... + 11715.

It is an arithmetic number, because the mean of its divisors is an integer number (7659498).

Almost surely, 2^61220994 is an apocalyptic number.

61220994 is an abundant number, since it is smaller than the sum of its proper divisors (61330974).

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

61220994 is a wasteful number, since it uses less digits than its factorization.

61220994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9169.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 61220994 is about 7824.3845764379. The cubic root of 61220994 is about 394.1245236711.

The spelling of 61220994 in words is "sixty-one million, two hundred twenty thousand, nine hundred ninety-four".