61392861 has 12 divisors (see below), whose sum is σ = 88924992. Its totient is φ = 40814856.

The previous prime is 61392829. The next prime is 61392869. The reversal of 61392861 is 16829316.

It is not a de Polignac number, because 61392861 - 2⁵ = 61392829 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61392869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5991 + ... + 12596.

It is an arithmetic number, because the mean of its divisors is an integer number (7410416).

Almost surely, 2^61392861 is an apocalyptic number.

It is an amenable number.

61392861 is a deficient number, since it is larger than the sum of its proper divisors (27532131).

61392861 is a wasteful number, since it uses less digits than its factorization.

61392861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18960 (or 18957 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 61392861 is about 7835.3596599008. The cubic root of 61392861 is about 394.4929904734.

The spelling of 61392861 in words is "sixty-one million, three hundred ninety-two thousand, eight hundred sixty-one".