61086621 has 8 divisors (see below), whose sum is σ = 82210464. Its totient is φ = 40343600.

The previous prime is 61086611. The next prime is 61086629. The reversal of 61086621 is 12668016.

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

It is a cyclic number.

It is not a de Polignac number, because 61086621 - 2¹³ = 61078429 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61086629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94830 + ... + 95471.

It is an arithmetic number, because the mean of its divisors is an integer number (10276308).

Almost surely, 2^61086621 is an apocalyptic number.

It is an amenable number.

61086621 is a deficient number, since it is larger than the sum of its proper divisors (21123843).

61086621 is a wasteful number, since it uses less digits than its factorization.

61086621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190411.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 61086621 is about 7815.7930499726. The cubic root of 61086621 is about 393.8359598671.

The spelling of 61086621 in words is "sixty-one million, eighty-six thousand, six hundred twenty-one".