61317377 has 4 divisors (see below), whose sum is σ = 66891696. Its totient is φ = 55743060.

The previous prime is 61317367. The next prime is 61317409. The reversal of 61317377 is 77371316.

It is a happy number.

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 not a de Polignac number, because 61317377 - 2⁸ = 61317121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61317337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2787143 + ... + 2787164.

It is an arithmetic number, because the mean of its divisors is an integer number (16722924).

Almost surely, 2^61317377 is an apocalyptic number.

It is an amenable number.

61317377 is a deficient number, since it is larger than the sum of its proper divisors (5574319).

61317377 is a wasteful number, since it uses less digits than its factorization.

61317377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5574318.

The product of its digits is 18522, while the sum is 35.

The square root of 61317377 is about 7830.5412967432. The cubic root of 61317377 is about 394.3312446234.

The spelling of 61317377 in words is "sixty-one million, three hundred seventeen thousand, three hundred seventy-seven".