61081614 has 80 divisors (see below), whose sum is σ = 150961536. Its totient is φ = 18306000.

The previous prime is 61081613. The next prime is 61081619. The reversal of 61081614 is 41618016.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61081613) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 268969 + ... + 269195.

Almost surely, 2^61081614 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61081614, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75480768).

61081614 is an abundant number, since it is smaller than the sum of its proper divisors (89879922).

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

61081614 is a wasteful number, since it uses less digits than its factorization.

61081614 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 394 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 61081614 is about 7815.4727304239. The cubic root of 61081614 is about 393.8251992428.

The spelling of 61081614 in words is "sixty-one million, eighty-one thousand, six hundred fourteen".