61717603 has 4 divisors (see below), whose sum is σ = 61733368. Its totient is φ = 61701840.

The previous prime is 61717583. The next prime is 61717609. The reversal of 61717603 is 30671716.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 61717603 - 2⁵ = 61717571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61717609) 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, 2983 + ... + 11503.

It is an arithmetic number, because the mean of its divisors is an integer number (15433342).

Almost surely, 2^61717603 is an apocalyptic number.

61717603 is a deficient number, since it is larger than the sum of its proper divisors (15765).

61717603 is an equidigital number, since it uses as much as digits as its factorization.

61717603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15764.

The product of its (nonzero) digits is 5292, while the sum is 31.

The square root of 61717603 is about 7856.0551805598. The cubic root of 61717603 is about 395.1873340959.

The spelling of 61717603 in words is "sixty-one million, seven hundred seventeen thousand, six hundred three".