61713493 has 4 divisors (see below), whose sum is σ = 61828108. Its totient is φ = 61598880.

The previous prime is 61713473. The next prime is 61713497. The reversal of 61713493 is 39431716.

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 20007729 + 41705764 = 4473^2 + 6458^2 .

It is a cyclic number.

It is not a de Polignac number, because 61713493 - 2⁵ = 61713461 is a prime.

It is a super-2 number, since 2×61713493² = 7617110436522098, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61713497) 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, 56496 + ... + 57577.

It is an arithmetic number, because the mean of its divisors is an integer number (15457027).

Almost surely, 2^61713493 is an apocalyptic number.

It is an amenable number.

61713493 is a deficient number, since it is larger than the sum of its proper divisors (114615).

61713493 is a wasteful number, since it uses less digits than its factorization.

61713493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114614.

The product of its digits is 13608, while the sum is 34.

The square root of 61713493 is about 7855.7935945390. The cubic root of 61713493 is about 395.1785615798.

The spelling of 61713493 in words is "sixty-one million, seven hundred thirteen thousand, four hundred ninety-three".