61693607 has 2 divisors, whose sum is σ = 61693608. Its totient is φ = 61693606.

The previous prime is 61693591. The next prime is 61693637. The reversal of 61693607 is 70639616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61693607 - 2⁴ = 61693591 is a prime.

It is a super-2 number, since 2×61693607² = 7612202289340898, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61693637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30846803 + 30846804.

It is an arithmetic number, because the mean of its divisors is an integer number (30846804).

Almost surely, 2^61693607 is an apocalyptic number.

61693607 is a deficient number, since it is larger than the sum of its proper divisors (1).

61693607 is an equidigital number, since it uses as much as digits as its factorization.

61693607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 61693607 is about 7854.5278024844. The cubic root of 61693607 is about 395.1361107600.

The spelling of 61693607 in words is "sixty-one million, six hundred ninety-three thousand, six hundred seven".