61900620 has 24 divisors (see below), whose sum is σ = 173321904. Its totient is φ = 16506816.

The previous prime is 61900541. The next prime is 61900633. The reversal of 61900620 is 2600916.

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, 515779 + ... + 515898.

It is an arithmetic number, because the mean of its divisors is an integer number (7221746).

Almost surely, 2^61900620 is an apocalyptic number.

61900620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

61900620 is an abundant number, since it is smaller than the sum of its proper divisors (111421284).

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

61900620 is a wasteful number, since it uses less digits than its factorization.

61900620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031689 (or 1031687 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 61900620 is about 7867.6947068376. The cubic root of 61900620 is about 395.5775773041.

The spelling of 61900620 in words is "sixty-one million, nine hundred thousand, six hundred twenty".