61895540 has 48 divisors (see below), whose sum is σ = 156374400. Its totient is φ = 20103552.

The previous prime is 61895539. The next prime is 61895551. The reversal of 61895540 is 4559816.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a junction number, because it is equal to n+sod(n) for n = 61895494 and 61895503.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8975 + ... + 14294.

It is an arithmetic number, because the mean of its divisors is an integer number (3257800).

Almost surely, 2^61895540 is an apocalyptic number.

It is an amenable number.

61895540 is an abundant number, since it is smaller than the sum of its proper divisors (94478860).

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

61895540 is a wasteful number, since it uses less digits than its factorization.

61895540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23304 (or 23302 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 61895540 is about 7867.3718610474. The cubic root of 61895540 is about 395.5667557158.

The spelling of 61895540 in words is "sixty-one million, eight hundred ninety-five thousand, five hundred forty".