61622022 has 64 divisors (see below), whose sum is σ = 155602944. Its totient is φ = 15803040.

The previous prime is 61621999. The next prime is 61622023. The reversal of 61622022 is 22022616.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 61622022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61622023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 37543 + ... + 39149.

It is an arithmetic number, because the mean of its divisors is an integer number (2431296).

Almost surely, 2^61622022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61622022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77801472).

61622022 is an abundant number, since it is smaller than the sum of its proper divisors (93980922).

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

61622022 is a wasteful number, since it uses less digits than its factorization.

61622022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713.

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 61622022 is about 7849.9695540811. The cubic root of 61622022 is about 394.9832220615.

Adding to 61622022 its reverse (22022616), we get a palindrome (83644638).

The spelling of 61622022 in words is "sixty-one million, six hundred twenty-two thousand, twenty-two".