61268921 has 8 divisors (see below), whose sum is σ = 70164864. Its totient is φ = 52408800.

The previous prime is 61268899. The next prime is 61268947. The reversal of 61268921 is 12986216.

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 61268921 - 2¹⁴ = 61252537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61268321) 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, 5180 + ... + 12221.

It is an arithmetic number, because the mean of its divisors is an integer number (8770608).

Almost surely, 2^61268921 is an apocalyptic number.

It is an amenable number.

61268921 is a deficient number, since it is larger than the sum of its proper divisors (8895943).

61268921 is a wasteful number, since it uses less digits than its factorization.

61268921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17911.

The product of its digits is 10368, while the sum is 35.

The square root of 61268921 is about 7827.4466462570. The cubic root of 61268921 is about 394.2273439500.

The spelling of 61268921 in words is "sixty-one million, two hundred sixty-eight thousand, nine hundred twenty-one".