61925647 has 4 divisors (see below), whose sum is σ = 70772176. Its totient is φ = 53079120.

The previous prime is 61925627. The next prime is 61925653. The reversal of 61925647 is 74652916.

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 61925647 - 2⁷ = 61925519 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 (61925627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4423254 + ... + 4423267.

It is an arithmetic number, because the mean of its divisors is an integer number (17693044).

Almost surely, 2^61925647 is an apocalyptic number.

61925647 is a deficient number, since it is larger than the sum of its proper divisors (8846529).

61925647 is an equidigital number, since it uses as much as digits as its factorization.

61925647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8846528.

The product of its digits is 90720, while the sum is 40.

The square root of 61925647 is about 7869.2850374097. The cubic root of 61925647 is about 395.6308820264.

The spelling of 61925647 in words is "sixty-one million, nine hundred twenty-five thousand, six hundred forty-seven".