61861283 has 32 divisors (see below), whose sum is σ = 78589440. Its totient is φ = 47900160.

The previous prime is 61861279. The next prime is 61861291. The reversal of 61861283 is 38216816.

It is not a de Polignac number, because 61861283 - 2² = 61861279 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61861243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81341 + ... + 82097.

It is an arithmetic number, because the mean of its divisors is an integer number (2455920).

Almost surely, 2^61861283 is an apocalyptic number.

61861283 is a deficient number, since it is larger than the sum of its proper divisors (16728157).

61861283 is a wasteful number, since it uses less digits than its factorization.

61861283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827.

The product of its digits is 13824, while the sum is 35.

The square root of 61861283 is about 7865.1944031918. The cubic root of 61861283 is about 395.4937648288.

The spelling of 61861283 in words is "sixty-one million, eight hundred sixty-one thousand, two hundred eighty-three".