61158673 has 4 divisors (see below), whose sum is σ = 64756260. Its totient is φ = 57561088.

The previous prime is 61158667. The next prime is 61158677. The reversal of 61158673 is 37685116.

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 34656769 + 26501904 = 5887^2 + 5148^2 .

It is a cyclic number.

It is not a de Polignac number, because 61158673 - 2⁵ = 61158641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61158677) 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, 1798768 + ... + 1798801.

It is an arithmetic number, because the mean of its divisors is an integer number (16189065).

Almost surely, 2^61158673 is an apocalyptic number.

It is an amenable number.

61158673 is a deficient number, since it is larger than the sum of its proper divisors (3597587).

61158673 is a wasteful number, since it uses less digits than its factorization.

61158673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3597586.

The product of its digits is 30240, while the sum is 37.

The square root of 61158673 is about 7820.4010766712. The cubic root of 61158673 is about 393.9907429091.

The spelling of 61158673 in words is "sixty-one million, one hundred fifty-eight thousand, six hundred seventy-three".