61960920 has 128 divisors (see below), whose sum is σ = 224985600. Its totient is φ = 13326336.

The previous prime is 61960891. The next prime is 61960931. The reversal of 61960920 is 2906916.

It is a happy number.

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, 12111 + ... + 16449.

It is an arithmetic number, because the mean of its divisors is an integer number (1757700).

Almost surely, 2^61960920 is an apocalyptic number.

61960920 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61960920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112492800).

61960920 is an abundant number, since it is smaller than the sum of its proper divisors (163024680).

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

61960920 is a wasteful number, since it uses less digits than its factorization.

61960920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4377 (or 4373 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 61960920 is about 7871.5259003576. The cubic root of 61960920 is about 395.7059852080.

The spelling of 61960920 in words is "sixty-one million, nine hundred sixty thousand, nine hundred twenty".