61576620 has 96 divisors (see below), whose sum is σ = 198137856. Its totient is φ = 13996800.

The previous prime is 61576609. The next prime is 61576631. The reversal of 61576620 is 2667516.

It is an interprime number because it is at equal distance from previous prime (61576609) and next prime (61576631).

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, 113550 + ... + 114090.

It is an arithmetic number, because the mean of its divisors is an integer number (2063936).

Almost surely, 2^61576620 is an apocalyptic number.

61576620 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 61576620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99068928).

61576620 is an abundant number, since it is smaller than the sum of its proper divisors (136561236).

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

61576620 is a wasteful number, since it uses less digits than its factorization.

61576620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 61576620 is about 7847.0771628677. The cubic root of 61576620 is about 394.8861927111.

The spelling of 61576620 in words is "sixty-one million, five hundred seventy-six thousand, six hundred twenty".