61286704 has 30 divisors (see below), whose sum is σ = 125271620. Its totient is φ = 28965888.

The previous prime is 61286623. The next prime is 61286707. The reversal of 61286704 is 40768216.

It is a self number, because there is not a number n which added to its sum of digits gives 61286704.

It is not an unprimeable number, because it can be changed into a prime (61286707) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 136272 + ... + 136720.

Almost surely, 2^61286704 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 61286704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62635810).

61286704 is an abundant number, since it is smaller than the sum of its proper divisors (63984916).

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

61286704 is an equidigital number, since it uses as much as digits as its factorization.

61286704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925 (or 470 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 61286704 is about 7828.5825025990. The cubic root of 61286704 is about 394.2654811033.

The spelling of 61286704 in words is "sixty-one million, two hundred eighty-six thousand, seven hundred four".