761247381 has 4 divisors (see below), whose sum is σ = 1014996512. Its totient is φ = 507498252.

The previous prime is 761247379. The next prime is 761247413. The reversal of 761247381 is 183742167.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 761247381 - 2¹ = 761247379 is a prime.

It is a super-2 number, since 2×761247381² = 1158995150158718322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (761247281) 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 3 ways as a sum of consecutive naturals, for example, 126874561 + ... + 126874566.

It is an arithmetic number, because the mean of its divisors is an integer number (253749128).

Almost surely, 2^761247381 is an apocalyptic number.

It is an amenable number.

761247381 is a deficient number, since it is larger than the sum of its proper divisors (253749131).

761247381 is a wasteful number, since it uses less digits than its factorization.

761247381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253749130.

The product of its digits is 56448, while the sum is 39.

The square root of 761247381 is about 27590.7118610593. The cubic root of 761247381 is about 913.0795241817.

The spelling of 761247381 in words is "seven hundred sixty-one million, two hundred forty-seven thousand, three hundred eighty-one".