61560576 has 216 divisors, whose sum is σ = 221929344. Its totient is φ = 15943680.

The previous prime is 61560547. The next prime is 61560593. The reversal of 61560576 is 67506516.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 61560576.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177235 + ... + 177581.

Almost surely, 2^61560576 is an apocalyptic number.

61560576 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61560576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110964672).

61560576 is an abundant number, since it is smaller than the sum of its proper divisors (160368768).

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

61560576 is a wasteful number, since it uses less digits than its factorization.

61560576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387 (or 370 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 61560576 is about 7846.0548048048. The cubic root of 61560576 is about 394.8518934137.

The spelling of 61560576 in words is "sixty-one million, five hundred sixty thousand, five hundred seventy-six".