760661321281 has 3 divisors (see below), whose sum is σ = 760662193441. Its totient is φ = 760660449122.

The previous prime is 760661321279. The next prime is 760661321309. The reversal of 760661321281 is 182123166067.

The square root of 760661321281 is 872159.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 760661321281 - 2¹ = 760661321279 is a prime.

It is a super-2 number, since 2×760661321281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (760661321881) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 436080 + ... + 1308238.

Almost surely, 2^760661321281 is an apocalyptic number.

760661321281 is the 872159-th square number.

760661321281 is the 436080-th centered octagonal number.

It is an amenable number.

760661321281 is a deficient number, since it is larger than the sum of its proper divisors (872160).

760661321281 is an frugal number, since it uses more digits than its factorization.

760661321281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744318 (or 872159 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 760661321281 in words is "seven hundred sixty billion, six hundred sixty-one million, three hundred twenty-one thousand, two hundred eighty-one".