61412391 has 16 divisors (see below), whose sum is σ = 91108320. Its totient is φ = 40884480.

The previous prime is 61412387. The next prime is 61412399. The reversal of 61412391 is 19321416.

61412391 is a `hidden beast` number, since 614 + 12 + 39 + 1 = 666.

It is not a de Polignac number, because 61412391 - 2² = 61412387 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61412399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28471 + ... + 30551.

It is an arithmetic number, because the mean of its divisors is an integer number (5694270).

Almost surely, 2^61412391 is an apocalyptic number.

61412391 is a deficient number, since it is larger than the sum of its proper divisors (29695929).

61412391 is a wasteful number, since it uses less digits than its factorization.

61412391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183 (or 3177 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 61412391 is about 7836.6058341606. The cubic root of 61412391 is about 394.5348174391.

The spelling of 61412391 in words is "sixty-one million, four hundred twelve thousand, three hundred ninety-one".