61373615 has 4 divisors (see below), whose sum is σ = 73648344. Its totient is φ = 49098888.

The previous prime is 61373593. The next prime is 61373633. The reversal of 61373615 is 51637316.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61373615 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6137357 + ... + 6137366.

It is an arithmetic number, because the mean of its divisors is an integer number (18412086).

Almost surely, 2^61373615 is an apocalyptic number.

61373615 is a deficient number, since it is larger than the sum of its proper divisors (12274729).

61373615 is a wasteful number, since it uses less digits than its factorization.

61373615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12274728.

The product of its digits is 11340, while the sum is 32.

The square root of 61373615 is about 7834.1314132455. The cubic root of 61373615 is about 394.4517630652.

The spelling of 61373615 in words is "sixty-one million, three hundred seventy-three thousand, six hundred fifteen".