764420073 has 16 divisors (see below), whose sum is σ = 1046664960. Its totient is φ = 495979344.

The previous prime is 764420053. The next prime is 764420081. The reversal of 764420073 is 370024467.

It is not a de Polignac number, because 764420073 - 2⁹ = 764419561 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (764420053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26038 + ... + 46976.

It is an arithmetic number, because the mean of its divisors is an integer number (65416560).

Almost surely, 2^764420073 is an apocalyptic number.

It is an amenable number.

764420073 is a deficient number, since it is larger than the sum of its proper divisors (282244887).

764420073 is a wasteful number, since it uses less digits than its factorization.

764420073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21268.

The product of its (nonzero) digits is 28224, while the sum is 33.

The square root of 764420073 is about 27648.1477318102. The cubic root of 764420073 is about 914.3462630090.

The spelling of 764420073 in words is "seven hundred sixty-four million, four hundred twenty thousand, seventy-three".