61948015 has 4 divisors (see below), whose sum is σ = 74337624. Its totient is φ = 49558408.

The previous prime is 61948009. The next prime is 61948057. The reversal of 61948015 is 51084916.

61948015 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61948015 - 2⁹ = 61947503 is a prime.

It is a Duffinian number.

It is a congruent 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, 6194797 + ... + 6194806.

It is an arithmetic number, because the mean of its divisors is an integer number (18584406).

Almost surely, 2^61948015 is an apocalyptic number.

61948015 is a deficient number, since it is larger than the sum of its proper divisors (12389609).

61948015 is a wasteful number, since it uses less digits than its factorization.

61948015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12389608.

The product of its (nonzero) digits is 8640, while the sum is 34.

The square root of 61948015 is about 7870.7061309644. The cubic root of 61948015 is about 395.6785112222.

The spelling of 61948015 in words is "sixty-one million, nine hundred forty-eight thousand, fifteen".