61412643 has 24 divisors (see below), whose sum is σ = 93716480. Its totient is φ = 38692080.

The previous prime is 61412623. The next prime is 61412677. The reversal of 61412643 is 34621416.

61412643 is a `hidden beast` number, since 6 + 1 + 4 + 12 + 643 = 666.

It is not a de Polignac number, because 61412643 - 2⁸ = 61412387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61412623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9438 + ... + 14556.

Almost surely, 2^61412643 is an apocalyptic number.

61412643 is a deficient number, since it is larger than the sum of its proper divisors (32303837).

61412643 is a wasteful number, since it uses less digits than its factorization.

61412643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5199 (or 5196 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 61412643 is about 7836.6219125335. The cubic root of 61412643 is about 394.5353570839.

The spelling of 61412643 in words is "sixty-one million, four hundred twelve thousand, six hundred forty-three".