817420746 has 16 divisors (see below), whose sum is σ = 1651696704. Its totient is φ = 269664384.

The previous prime is 817420729. The next prime is 817420763. The reversal of 817420746 is 647024718.

817420746 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (817420729) and next prime (817420763).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701670 + ... + 702833.

It is an arithmetic number, because the mean of its divisors is an integer number (103231044).

Almost surely, 2^817420746 is an apocalyptic number.

817420746 is an abundant number, since it is smaller than the sum of its proper divisors (834275958).

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

817420746 is a wasteful number, since it uses less digits than its factorization.

817420746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404605.

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 817420746 is about 28590.5709281924. The cubic root of 817420746 is about 935.0077671960.

It can be divided in two parts, 8174 and 20746, that added together give a triangular number (28920 = T₂₄₀).

The spelling of 817420746 in words is "eight hundred seventeen million, four hundred twenty thousand, seven hundred forty-six".