61265647 has 2 divisors, whose sum is σ = 61265648. Its totient is φ = 61265646.

The previous prime is 61265627. The next prime is 61265651. The reversal of 61265647 is 74656216.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61265647 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61265627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30632823 + 30632824.

It is an arithmetic number, because the mean of its divisors is an integer number (30632824).

Almost surely, 2^61265647 is an apocalyptic number.

61265647 is a deficient number, since it is larger than the sum of its proper divisors (1).

61265647 is an equidigital number, since it uses as much as digits as its factorization.

61265647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 60480, while the sum is 37.

The square root of 61265647 is about 7827.2375075757. The cubic root of 61265647 is about 394.2203217747.

The spelling of 61265647 in words is "sixty-one million, two hundred sixty-five thousand, six hundred forty-seven".