764140406 has 4 divisors (see below), whose sum is σ = 1146210612. Its totient is φ = 382070202.

The previous prime is 764140381. The next prime is 764140409. The reversal of 764140406 is 604041467.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764140409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191035100 + ... + 191035103.

It is an arithmetic number, because the mean of its divisors is an integer number (286552653).

Almost surely, 2^764140406 is an apocalyptic number.

764140406 is a deficient number, since it is larger than the sum of its proper divisors (382070206).

764140406 is a wasteful number, since it uses less digits than its factorization.

764140406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382070205.

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 764140406 is about 27643.0896608899. The cubic root of 764140406 is about 914.2347433196.

The spelling of 764140406 in words is "seven hundred sixty-four million, one hundred forty thousand, four hundred six".