61785260 has 24 divisors (see below), whose sum is σ = 132511680. Its totient is φ = 24187904.

The previous prime is 61785257. The next prime is 61785277. The reversal of 61785260 is 6258716.

It is a self number, because there is not a number n which added to its sum of digits gives 61785260.

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, 31925 + ... + 33804.

It is an arithmetic number, because the mean of its divisors is an integer number (5521320).

Almost surely, 2^61785260 is an apocalyptic number.

It is an amenable number.

61785260 is an abundant number, since it is smaller than the sum of its proper divisors (70726420).

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

61785260 is a wasteful number, since it uses less digits than its factorization.

61785260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65785 (or 65783 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 61785260 is about 7860.3600426444. The cubic root of 61785260 is about 395.3316874302.

The spelling of 61785260 in words is "sixty-one million, seven hundred eighty-five thousand, two hundred sixty".