861625753 has 2 divisors, whose sum is σ = 861625754. Its totient is φ = 861625752.

The previous prime is 861625733. The next prime is 861625777. The reversal of 861625753 is 357526168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 861539904 + 85849 = 29352^2 + 293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-861625753 is a prime.

It is not a weakly prime, because it can be changed into another prime (861625733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430812876 + 430812877.

It is an arithmetic number, because the mean of its divisors is an integer number (430812877).

Almost surely, 2^861625753 is an apocalyptic number.

It is an amenable number.

861625753 is a deficient number, since it is larger than the sum of its proper divisors (1).

861625753 is an equidigital number, since it uses as much as digits as its factorization.

861625753 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 43.

The square root of 861625753 is about 29353.4623681773. The cubic root of 861625753 is about 951.5674043927.

The spelling of 861625753 in words is "eight hundred sixty-one million, six hundred twenty-five thousand, seven hundred fifty-three".