61957020 has 24 divisors (see below), whose sum is σ = 173479824. Its totient is φ = 16521856.

The previous prime is 61957019. The next prime is 61957039. The reversal of 61957020 is 2075916.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 516249 + ... + 516368.

It is an arithmetic number, because the mean of its divisors is an integer number (7228326).

Almost surely, 2^61957020 is an apocalyptic number.

61957020 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61957020 is an abundant number, since it is smaller than the sum of its proper divisors (111522804).

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

61957020 is a wasteful number, since it uses less digits than its factorization.

61957020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032629 (or 1032627 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 61957020 is about 7871.2781681249. The cubic root of 61957020 is about 395.6976827397.

The spelling of 61957020 in words is "sixty-one million, nine hundred fifty-seven thousand, twenty".