61622290 has 32 divisors (see below), whose sum is σ = 116816256. Its totient is φ = 23358720.

The previous prime is 61622287. The next prime is 61622299. The reversal of 61622290 is 9222616.

It is not an unprimeable number, because it can be changed into a prime (61622299) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24805 + ... + 27175.

It is an arithmetic number, because the mean of its divisors is an integer number (3650508).

Almost surely, 2^61622290 is an apocalyptic number.

61622290 is a deficient number, since it is larger than the sum of its proper divisors (55193966).

61622290 is a wasteful number, since it uses less digits than its factorization.

61622290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 61622290 is about 7849.9866241924. The cubic root of 61622290 is about 394.9837946671.

The spelling of 61622290 in words is "sixty-one million, six hundred twenty-two thousand, two hundred ninety".