61901600 has 36 divisors (see below), whose sum is σ = 151119234. Its totient is φ = 24760320.

The previous prime is 61901599. The next prime is 61901611. The reversal of 61901600 is 610916.

It can be written as a sum of positive squares in 3 ways, for example, as 41938576 + 19963024 = 6476^2 + 4468^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 37889 + ... + 39488.

Almost surely, 2^61901600 is an apocalyptic number.

It is an amenable number.

61901600 is an abundant number, since it is smaller than the sum of its proper divisors (89217634).

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

61901600 is a wasteful number, since it uses less digits than its factorization.

61901600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77397 (or 77384 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 61901600 is about 7867.7569865877. The cubic root of 61901600 is about 395.5796648652.

The spelling of 61901600 in words is "sixty-one million, nine hundred one thousand, six hundred".