61724374 has 4 divisors (see below), whose sum is σ = 92586564. Its totient is φ = 30862186.

The previous prime is 61724339. The next prime is 61724381. The reversal of 61724374 is 47342716.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15431092 + ... + 15431095.

It is an arithmetic number, because the mean of its divisors is an integer number (23146641).

Almost surely, 2^61724374 is an apocalyptic number.

61724374 is a deficient number, since it is larger than the sum of its proper divisors (30862190).

61724374 is a wasteful number, since it uses less digits than its factorization.

61724374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30862189.

The product of its digits is 28224, while the sum is 34.

The square root of 61724374 is about 7856.4861102149. The cubic root of 61724374 is about 395.2017854867.

The spelling of 61724374 in words is "sixty-one million, seven hundred twenty-four thousand, three hundred seventy-four".