61463556 has 192 divisors, whose sum is σ = 209664000. Its totient is φ = 15085440.

The previous prime is 61463527. The next prime is 61463573. The reversal of 61463556 is 65536416.

61463556 is a `hidden beast` number, since 6 + 14 + 635 + 5 + 6 = 666.

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 61463556.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 157810 + ... + 158198.

It is an arithmetic number, because the mean of its divisors is an integer number (1092000).

Almost surely, 2^61463556 is an apocalyptic number.

61463556 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 61463556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104832000).

61463556 is an abundant number, since it is smaller than the sum of its proper divisors (148200444).

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

61463556 is a wasteful number, since it uses less digits than its factorization.

61463556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439 (or 431 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 61463556 is about 7839.8696417734. The cubic root of 61463556 is about 394.6443543484.

The spelling of 61463556 in words is "sixty-one million, four hundred sixty-three thousand, five hundred fifty-six".