767640101 has 4 divisors (see below), whose sum is σ = 767798304. Its totient is φ = 767481900.

The previous prime is 767640079. The next prime is 767640113. The reversal of 767640101 is 101046767.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-767640101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (767640161) 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, 71585 + ... + 81606.

It is an arithmetic number, because the mean of its divisors is an integer number (191949576).

Almost surely, 2^767640101 is an apocalyptic number.

It is an amenable number.

767640101 is a deficient number, since it is larger than the sum of its proper divisors (158203).

767640101 is a wasteful number, since it uses less digits than its factorization.

767640101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158202.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 767640101 is about 27706.3187919290. The cubic root of 767640101 is about 915.6283225559.

Adding to 767640101 its reverse (101046767), we get a palindrome (868686868).

The spelling of 767640101 in words is "seven hundred sixty-seven million, six hundred forty thousand, one hundred one".