61918074 has 64 divisors (see below), whose sum is σ = 149904000. Its totient is φ = 18869760.

The previous prime is 61918061. The next prime is 61918079. The reversal of 61918074 is 47081916.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61918079) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28714 + ... + 30794.

It is an arithmetic number, because the mean of its divisors is an integer number (2342250).

Almost surely, 2^61918074 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61918074, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74952000).

61918074 is an abundant number, since it is smaller than the sum of its proper divisors (87985926).

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

61918074 is a wasteful number, since it uses less digits than its factorization.

61918074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2140 (or 2134 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 36.

The square root of 61918074 is about 7868.8038481080. The cubic root of 61918074 is about 395.6147538956.

The spelling of 61918074 in words is "sixty-one million, nine hundred eighteen thousand, seventy-four".