61994016 has 216 divisors, whose sum is σ = 215115264. Its totient is φ = 16853760.

The previous prime is 61993991. The next prime is 61994027. The reversal of 61994016 is 61049916.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 324481 + ... + 324671.

It is an arithmetic number, because the mean of its divisors is an integer number (995904).

Almost surely, 2^61994016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61994016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107557632).

61994016 is an abundant number, since it is smaller than the sum of its proper divisors (153121248).

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

61994016 is a wasteful number, since it uses less digits than its factorization.

61994016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 61994016 is about 7873.6278804627. The cubic root of 61994016 is about 395.7764272125.

The spelling of 61994016 in words is "sixty-one million, nine hundred ninety-four thousand, sixteen".