61300881 has 14 divisors (see below), whose sum is σ = 91910370. Its totient is φ = 40866768.

The previous prime is 61300879. The next prime is 61300891. The reversal of 61300881 is 18800316.

It can be written as a sum of positive squares in only one way, i.e., 55130625 + 6170256 = 7425^2 + 2484^2 .

It is not a de Polignac number, because 61300881 - 2¹ = 61300879 is a prime.

It is a super-2 number, since 2×61300881² = 7515596022752322, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (61300891) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 41316 + ... + 42773.

Almost surely, 2^61300881 is an apocalyptic number.

It is an amenable number.

61300881 is a deficient number, since it is larger than the sum of its proper divisors (30609489).

61300881 is an frugal number, since it uses more digits than its factorization.

61300881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84107 (or 84092 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 61300881 is about 7829.4879142892. The cubic root of 61300881 is about 394.2958795988.

It can be divided in two parts, 613008 and 81, that added together give a square (613089 = 783²).

The spelling of 61300881 in words is "sixty-one million, three hundred thousand, eight hundred eighty-one".