61188367 has 2 divisors, whose sum is σ = 61188368. Its totient is φ = 61188366.

The previous prime is 61188331. The next prime is 61188377. The reversal of 61188367 is 76388116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61188367 - 2¹⁵ = 61155599 is a prime.

It is a super-2 number, since 2×61188367² = 7488032512253378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61188377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30594183 + 30594184.

It is an arithmetic number, because the mean of its divisors is an integer number (30594184).

Almost surely, 2^61188367 is an apocalyptic number.

61188367 is a deficient number, since it is larger than the sum of its proper divisors (1).

61188367 is an equidigital number, since it uses as much as digits as its factorization.

61188367 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 40.

The square root of 61188367 is about 7822.2993422650. The cubic root of 61188367 is about 394.0544965718.

The spelling of 61188367 in words is "sixty-one million, one hundred eighty-eight thousand, three hundred sixty-seven".