767641 has 4 divisors (see below), whose sum is σ = 877312. Its totient is φ = 657972.

The previous prime is 767633. The next prime is 767647. The reversal of 767641 is 146767.

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 767641 - 2³ = 767633 is a prime.

It is a Duffinian number.

767641 is a lucky number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (767647) 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, 54825 + ... + 54838.

It is an arithmetic number, because the mean of its divisors is an integer number (219328).

2⁷⁶⁷⁶⁴¹ is an apocalyptic number.

It is an amenable number.

767641 is a deficient number, since it is larger than the sum of its proper divisors (109671).

767641 is a wasteful number, since it uses less digits than its factorization.

767641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109670.

The product of its digits is 7056, while the sum is 31.

The square root of 767641 is about 876.1512426516. The cubic root of 767641 is about 91.5628679993.

The spelling of 767641 in words is "seven hundred sixty-seven thousand, six hundred forty-one".