61948021 has 8 divisors (see below), whose sum is σ = 63483264. Its totient is φ = 60421920.

The previous prime is 61948009. The next prime is 61948057. The reversal of 61948021 is 12084916.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61948021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61946021) 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, 12606 + ... + 16816.

It is an arithmetic number, because the mean of its divisors is an integer number (7935408).

Almost surely, 2^61948021 is an apocalyptic number.

It is an amenable number.

61948021 is a deficient number, since it is larger than the sum of its proper divisors (1535243).

61948021 is a wasteful number, since it uses less digits than its factorization.

61948021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 61948021 is about 7870.7065121246. The cubic root of 61948021 is about 395.6785239967.

The spelling of 61948021 in words is "sixty-one million, nine hundred forty-eight thousand, twenty-one".