61142699 has 2 divisors, whose sum is σ = 61142700. Its totient is φ = 61142698.

The previous prime is 61142681. The next prime is 61142707. The reversal of 61142699 is 99624116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61142699 - 2²⁰ = 60094123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61142639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30571349 + 30571350.

It is an arithmetic number, because the mean of its divisors is an integer number (30571350).

Almost surely, 2^61142699 is an apocalyptic number.

61142699 is a deficient number, since it is larger than the sum of its proper divisors (1).

61142699 is an equidigital number, since it uses as much as digits as its factorization.

61142699 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23328, while the sum is 38.

The square root of 61142699 is about 7819.3797068565. The cubic root of 61142699 is about 393.9564378474.

The spelling of 61142699 in words is "sixty-one million, one hundred forty-two thousand, six hundred ninety-nine".