61651422 has 64 divisors (see below), whose sum is σ = 160258560. Its totient is φ = 17200512.

The previous prime is 61651411. The next prime is 61651423. The reversal of 61651422 is 22415616.

61651422 is a `hidden beast` number, since 6 + 1 + 651 + 4 + 2 + 2 = 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 (61651423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14358 + ... + 18150.

It is an arithmetic number, because the mean of its divisors is an integer number (2504040).

Almost surely, 2^61651422 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61651422, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80129280).

61651422 is an abundant number, since it is smaller than the sum of its proper divisors (98607138).

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

61651422 is a wasteful number, since it uses less digits than its factorization.

61651422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3854 (or 3848 counting only the distinct ones).

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

The square root of 61651422 is about 7851.8419495046. The cubic root of 61651422 is about 395.0460278575.

The spelling of 61651422 in words is "sixty-one million, six hundred fifty-one thousand, four hundred twenty-two".