61622090 has 8 divisors (see below), whose sum is σ = 110919780. Its totient is φ = 24648832.

The previous prime is 61622089. The next prime is 61622117. The reversal of 61622090 is 9022616.

61622090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 61042969 + 579121 = 7813^2 + 761^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3081095 + ... + 3081114.

Almost surely, 2^61622090 is an apocalyptic number.

61622090 is a deficient number, since it is larger than the sum of its proper divisors (49297690).

61622090 is a wasteful number, since it uses less digits than its factorization.

61622090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6162216.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 61622090 is about 7849.9738853069. The cubic root of 61622090 is about 394.9833673496.

The spelling of 61622090 in words is "sixty-one million, six hundred twenty-two thousand, ninety".