61327609 has 16 divisors (see below), whose sum is σ = 71792640. Its totient is φ = 51302160.

The previous prime is 61327561. The next prime is 61327613. The reversal of 61327609 is 90672316.

It is not a de Polignac number, because 61327609 - 2⁷ = 61327481 is a prime.

It is a super-2 number, since 2×61327609² = 7522151251313762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61327709) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66864 + ... + 67774.

It is an arithmetic number, because the mean of its divisors is an integer number (4487040).

Almost surely, 2^61327609 is an apocalyptic number.

It is an amenable number.

61327609 is a deficient number, since it is larger than the sum of its proper divisors (10465031).

61327609 is a wasteful number, since it uses less digits than its factorization.

61327609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140.

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

The square root of 61327609 is about 7831.1946087427. The cubic root of 61327609 is about 394.3531773559.

The spelling of 61327609 in words is "sixty-one million, three hundred twenty-seven thousand, six hundred nine".