61322621 has 12 divisors (see below), whose sum is σ = 66135168. Its totient is φ = 56836032.

The previous prime is 61322603. The next prime is 61322683. The reversal of 61322621 is 12622316.

It is not a de Polignac number, because 61322621 - 2¹⁸ = 61060477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61321621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17780 + ... + 20946.

It is an arithmetic number, because the mean of its divisors is an integer number (5511264).

Almost surely, 2^61322621 is an apocalyptic number.

It is an amenable number.

61322621 is a deficient number, since it is larger than the sum of its proper divisors (4812547).

61322621 is a wasteful number, since it uses less digits than its factorization.

61322621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3268 (or 3251 counting only the distinct ones).

The product of its digits is 864, while the sum is 23.

The square root of 61322621 is about 7830.8761323367. The cubic root of 61322621 is about 394.3424856679.

Adding to 61322621 its reverse (12622316), we get a palindrome (73944937).

The spelling of 61322621 in words is "sixty-one million, three hundred twenty-two thousand, six hundred twenty-one".