764478107 has 4 divisors (see below), whose sum is σ = 775888296. Its totient is φ = 753067920.

The previous prime is 764478103. The next prime is 764478131. The reversal of 764478107 is 701874467.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 701874467 = 7 ⋅100267781.

It is a cyclic number.

It is not a de Polignac number, because 764478107 - 2² = 764478103 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (764478103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5704994 + ... + 5705127.

It is an arithmetic number, because the mean of its divisors is an integer number (193972074).

Almost surely, 2^764478107 is an apocalyptic number.

764478107 is a deficient number, since it is larger than the sum of its proper divisors (11410189).

764478107 is a wasteful number, since it uses less digits than its factorization.

764478107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11410188.

The product of its (nonzero) digits is 263424, while the sum is 44.

The square root of 764478107 is about 27649.1972216193. The cubic root of 764478107 is about 914.3694011718.

The spelling of 764478107 in words is "seven hundred sixty-four million, four hundred seventy-eight thousand, one hundred seven".