767712641 has 4 divisors (see below), whose sum is σ = 768676692. Its totient is φ = 766748592.

The previous prime is 767712637. The next prime is 767712643. The reversal of 767712641 is 146217767.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 145709041 + 622003600 = 12071^2 + 24940^2 .

It is a cyclic number.

It is not a de Polignac number, because 767712641 - 2² = 767712637 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (767712643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480830 + ... + 482423.

It is an arithmetic number, because the mean of its divisors is an integer number (192169173).

Almost surely, 2^767712641 is an apocalyptic number.

It is an amenable number.

767712641 is a deficient number, since it is larger than the sum of its proper divisors (964051).

767712641 is an equidigital number, since it uses as much as digits as its factorization.

767712641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964050.

The product of its digits is 98784, while the sum is 41.

The square root of 767712641 is about 27707.6278486629. The cubic root of 767712641 is about 915.6571631486.

The spelling of 767712641 in words is "seven hundred sixty-seven million, seven hundred twelve thousand, six hundred forty-one".