61301900 has 72 divisors (see below), whose sum is σ = 151490304. Its totient is φ = 21313600.

The previous prime is 61301899. The next prime is 61301917. The reversal of 61301900 is 910316.

61301900 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61301900² = 7515845887220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24089 + ... + 26511.

It is an arithmetic number, because the mean of its divisors is an integer number (2104032).

Almost surely, 2^61301900 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 61301900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75745152).

61301900 is an abundant number, since it is smaller than the sum of its proper divisors (90188404).

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

61301900 is a wasteful number, since it uses less digits than its factorization.

61301900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2471 (or 2464 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 61301900 is about 7829.5529885173. The cubic root of 61301900 is about 394.2980643705.

The spelling of 61301900 in words is "sixty-one million, three hundred one thousand, nine hundred".