61622239 has 4 divisors (see below), whose sum is σ = 70425424. Its totient is φ = 52819056.

The previous prime is 61622233. The next prime is 61622273. The reversal of 61622239 is 93222616.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61622239 - 2⁵ = 61622207 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61622239.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61622233) 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 3 ways as a sum of consecutive naturals, for example, 4401582 + ... + 4401595.

It is an arithmetic number, because the mean of its divisors is an integer number (17606356).

Almost surely, 2^61622239 is an apocalyptic number.

61622239 is a deficient number, since it is larger than the sum of its proper divisors (8803185).

61622239 is an equidigital number, since it uses as much as digits as its factorization.

61622239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8803184.

The product of its digits is 7776, while the sum is 31.

The square root of 61622239 is about 7849.9833757786. The cubic root of 61622239 is about 394.9836857012.

The spelling of 61622239 in words is "sixty-one million, six hundred twenty-two thousand, two hundred thirty-nine".