61421652 has 72 divisors (see below), whose sum is σ = 166639200. Its totient is φ = 19758816.

The previous prime is 61421641. The next prime is 61421653. The reversal of 61421652 is 25612416.

61421652 is a `hidden beast` number, since 6 + 1 + 4 + 2 + 1 + 652 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61421653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27099 + ... + 29277.

Almost surely, 2^61421652 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 61421652, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83319600).

61421652 is an abundant number, since it is smaller than the sum of its proper divisors (105217548).

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

61421652 is a wasteful number, since it uses less digits than its factorization.

61421652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2227 (or 2213 counting only the distinct ones).

The product of its digits is 2880, while the sum is 27.

The square root of 61421652 is about 7837.1966926957. The cubic root of 61421652 is about 394.5546484169.

The spelling of 61421652 in words is "sixty-one million, four hundred twenty-one thousand, six hundred fifty-two".