61260636 has 48 divisors (see below), whose sum is σ = 151625600. Its totient is φ = 19196352.

The previous prime is 61260623. The next prime is 61260637. The reversal of 61260636 is 63606216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61260637) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30726 + ... + 32658.

Almost surely, 2^61260636 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 61260636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75812800).

61260636 is an abundant number, since it is smaller than the sum of its proper divisors (90364964).

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

61260636 is a wasteful number, since it uses less digits than its factorization.

61260636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098 (or 2096 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 61260636 is about 7826.9174008673. The cubic root of 61260636 is about 394.2095735441.

The spelling of 61260636 in words is "sixty-one million, two hundred sixty thousand, six hundred thirty-six".