764891742 has 16 divisors (see below), whose sum is σ = 1533093120. Its totient is φ = 254412312.

The previous prime is 764891741. The next prime is 764891767. The reversal of 764891742 is 247198467.

It is a junction number, because it is equal to n+sod(n) for n = 764891691 and 764891700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (764891741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134892 + ... + 140447.

It is an arithmetic number, because the mean of its divisors is an integer number (95818320).

Almost surely, 2^764891742 is an apocalyptic number.

764891742 is an abundant number, since it is smaller than the sum of its proper divisors (768201378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

764891742 is a wasteful number, since it uses less digits than its factorization.

764891742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275807.

The product of its digits is 677376, while the sum is 48.

The square root of 764891742 is about 27656.6762645116. The cubic root of 764891742 is about 914.5342835889.

The spelling of 764891742 in words is "seven hundred sixty-four million, eight hundred ninety-one thousand, seven hundred forty-two".