61632630 has 64 divisors (see below), whose sum is σ = 166855680. Its totient is φ = 16185312.

The previous prime is 61632583. The next prime is 61632643. The reversal of 61632630 is 3623616.

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

It is a junction number, because it is equal to n+sod(n) for n = 61632594 and 61632603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16387 + ... + 19793.

It is an arithmetic number, because the mean of its divisors is an integer number (2607120).

Almost surely, 2^61632630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61632630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83427840).

61632630 is an abundant number, since it is smaller than the sum of its proper divisors (105223050).

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

61632630 is a wasteful number, since it uses less digits than its factorization.

61632630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3490 (or 3484 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 61632630 is about 7850.6451964154. The cubic root of 61632630 is about 395.0058857212.

The spelling of 61632630 in words is "sixty-one million, six hundred thirty-two thousand, six hundred thirty".