61327597 has 4 divisors (see below), whose sum is σ = 61509916. Its totient is φ = 61145280.

The previous prime is 61327561. The next prime is 61327613. The reversal of 61327597 is 79572316.

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

It can be written as a sum of positive squares in 2 ways, for example, as 27815076 + 33512521 = 5274^2 + 5789^2 .

It is a de Polignac number, because none of the positive numbers 2^k-61327597 is a prime.

It is a super-2 number, since 2×61327597² = 7522148307588818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61327507) 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, 90654 + ... + 91327.

It is an arithmetic number, because the mean of its divisors is an integer number (15377479).

Almost surely, 2^61327597 is an apocalyptic number.

It is an amenable number.

61327597 is a deficient number, since it is larger than the sum of its proper divisors (182319).

61327597 is a wasteful number, since it uses less digits than its factorization.

61327597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182318.

The product of its digits is 79380, while the sum is 40.

The square root of 61327597 is about 7831.1938425760. The cubic root of 61327597 is about 394.3531516348.

The spelling of 61327597 in words is "sixty-one million, three hundred twenty-seven thousand, five hundred ninety-seven".