61782345 has 40 divisors (see below), whose sum is σ = 112210560. Its totient is φ = 32516640.

The previous prime is 61782251. The next prime is 61782353. The reversal of 61782345 is 54328716.

61782345 is a `hidden beast` number, since 617 + 8 + 2 + 34 + 5 = 666.

It is not a de Polignac number, because 61782345 - 2¹⁷ = 61651273 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 31030 + ... + 32960.

It is an arithmetic number, because the mean of its divisors is an integer number (2805264).

Almost surely, 2^61782345 is an apocalyptic number.

It is an amenable number.

61782345 is a deficient number, since it is larger than the sum of its proper divisors (50428215).

61782345 is a wasteful number, since it uses less digits than its factorization.

61782345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027 (or 2018 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 61782345 is about 7860.1746163810. The cubic root of 61782345 is about 395.3254701437.

The spelling of 61782345 in words is "sixty-one million, seven hundred eighty-two thousand, three hundred forty-five".