61338621 has 8 divisors (see below), whose sum is σ = 81825120. Its totient is φ = 40872272.

The previous prime is 61338581. The next prime is 61338623. The reversal of 61338621 is 12683316.

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 61338621 - 2¹⁹ = 60814333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61338623) 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, 4831 + ... + 12083.

It is an arithmetic number, because the mean of its divisors is an integer number (10228140).

Almost surely, 2^61338621 is an apocalyptic number.

It is an amenable number.

61338621 is a deficient number, since it is larger than the sum of its proper divisors (20486499).

61338621 is a wasteful number, since it uses less digits than its factorization.

61338621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10075.

The product of its digits is 5184, while the sum is 30.

The square root of 61338621 is about 7831.8976627635. The cubic root of 61338621 is about 394.3767793266.

The spelling of 61338621 in words is "sixty-one million, three hundred thirty-eight thousand, six hundred twenty-one".