61189693 has 4 divisors (see below), whose sum is σ = 62103040. Its totient is φ = 60276348.

The previous prime is 61189679. The next prime is 61189697. The reversal of 61189693 is 39698116.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61189693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61189697) 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, 456573 + ... + 456706.

It is an arithmetic number, because the mean of its divisors is an integer number (15525760).

Almost surely, 2^61189693 is an apocalyptic number.

It is an amenable number.

61189693 is a deficient number, since it is larger than the sum of its proper divisors (913347).

61189693 is an equidigital number, since it uses as much as digits as its factorization.

61189693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 913346.

The product of its digits is 69984, while the sum is 43.

The square root of 61189693 is about 7822.3840994929. The cubic root of 61189693 is about 394.0573430414.

The spelling of 61189693 in words is "sixty-one million, one hundred eighty-nine thousand, six hundred ninety-three".