9640767 has 4 divisors (see below), whose sum is σ = 12854360. Its totient is φ = 6427176.

The previous prime is 9640739. The next prime is 9640811. The reversal of 9640767 is 7670469.

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

It is not a de Polignac number, because 9640767 - 2⁷ = 9640639 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 (9640727) 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, 1606792 + ... + 1606797.

It is an arithmetic number, because the mean of its divisors is an integer number (3213590).

Almost surely, 2^9640767 is an apocalyptic number.

9640767 is a deficient number, since it is larger than the sum of its proper divisors (3213593).

9640767 is a wasteful number, since it uses less digits than its factorization.

9640767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3213592.

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 9640767 is about 3104.9584538283. The cubic root of 9640767 is about 212.8321320574.

The spelling of 9640767 in words is "nine million, six hundred forty thousand, seven hundred sixty-seven".