761722245 has 16 divisors (see below), whose sum is σ = 1354173120. Its totient is φ = 406251792.

The previous prime is 761722243. The next prime is 761722259. The reversal of 761722245 is 542227167.

It is a happy number.

It is not a de Polignac number, because 761722245 - 2¹ = 761722243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (761722243) 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 in 15 ways as a sum of consecutive naturals, for example, 2821059 + ... + 2821328.

It is an arithmetic number, because the mean of its divisors is an integer number (84635820).

Almost surely, 2^761722245 is an apocalyptic number.

It is an amenable number.

761722245 is a deficient number, since it is larger than the sum of its proper divisors (592450875).

761722245 is a wasteful number, since it uses less digits than its factorization.

761722245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5642401 (or 5642395 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 761722245 is about 27599.3160241336. The cubic root of 761722245 is about 913.2693435405.

The spelling of 761722245 in words is "seven hundred sixty-one million, seven hundred twenty-two thousand, two hundred forty-five".