646743094 has 16 divisors (see below), whose sum is σ = 1018551600. Its totient is φ = 307558944.

The previous prime is 646743079. The next prime is 646743101. The reversal of 646743094 is 490347646.

It is a self number, because there is not a number n which added to its sum of digits gives 646743094.

It is a congruent 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, 79329 + ... + 87100.

It is an arithmetic number, because the mean of its divisors is an integer number (63659475).

Almost surely, 2^646743094 is an apocalyptic number.

646743094 is a deficient number, since it is larger than the sum of its proper divisors (371808506).

646743094 is a wasteful number, since it uses less digits than its factorization.

646743094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166527.

The product of its (nonzero) digits is 435456, while the sum is 43.

The square root of 646743094 is about 25431.1441740241. The cubic root of 646743094 is about 864.7898824737.

The spelling of 646743094 in words is "six hundred forty-six million, seven hundred forty-three thousand, ninety-four".