761517045 has 56 divisors (see below), whose sum is σ = 1376156952. Its totient is φ = 404352000.

The previous prime is 761517041. The next prime is 761517047. The reversal of 761517045 is 540715167.

It can be written as a sum of positive squares in 4 ways, for example, as 211004676 + 550512369 = 14526^2 + 23463^2 .

It is not a de Polignac number, because 761517045 - 2² = 761517041 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (761517041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1461385 + ... + 1461905.

Almost surely, 2^761517045 is an apocalyptic number.

It is an amenable number.

761517045 is a deficient number, since it is larger than the sum of its proper divisors (614639907).

761517045 is an equidigital number, since it uses as much as digits as its factorization.

761517045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945 (or 930 counting only the distinct ones).

The product of its (nonzero) digits is 29400, while the sum is 36.

The square root of 761517045 is about 27595.5982903071. The cubic root of 761517045 is about 913.1873277746.

The spelling of 761517045 in words is "seven hundred sixty-one million, five hundred seventeen thousand, forty-five".