61274620 has 96 divisors (see below), whose sum is σ = 150232320. Its totient is φ = 20759040.

The previous prime is 61274617. The next prime is 61274641. The reversal of 61274620 is 2647216.

It is a super-2 number, since 2×61274620² = 7509158112288800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 447192 + ... + 447328.

It is an arithmetic number, because the mean of its divisors is an integer number (1564920).

Almost surely, 2^61274620 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 61274620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75116160).

61274620 is an abundant number, since it is smaller than the sum of its proper divisors (88957700).

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

61274620 is a wasteful number, since it uses less digits than its factorization.

61274620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 281 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 61274620 is about 7827.8106773222. The cubic root of 61274620 is about 394.2395667428.

The spelling of 61274620 in words is "sixty-one million, two hundred seventy-four thousand, six hundred twenty".