61164893 has 4 divisors (see below), whose sum is σ = 61770588. Its totient is φ = 60559200.

The previous prime is 61164871. The next prime is 61164911. The reversal of 61164893 is 39846116.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45657049 + 15507844 = 6757^2 + 3938^2 .

It is a cyclic number.

It is not a de Polignac number, because 61164893 - 2⁸ = 61164637 is a prime.

It is a super-2 number, since 2×61164893² = 7482288271402898, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61164823) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 302696 + ... + 302897.

It is an arithmetic number, because the mean of its divisors is an integer number (15442647).

Almost surely, 2^61164893 is an apocalyptic number.

It is an amenable number.

61164893 is a deficient number, since it is larger than the sum of its proper divisors (605695).

61164893 is a wasteful number, since it uses less digits than its factorization.

61164893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 605694.

The product of its digits is 31104, while the sum is 38.

The square root of 61164893 is about 7820.7987443739. The cubic root of 61164893 is about 394.0040990924.

The spelling of 61164893 in words is "sixty-one million, one hundred sixty-four thousand, eight hundred ninety-three".