646476802 has 8 divisors (see below), whose sum is σ = 995923836. Its totient is φ = 314502192.

The previous prime is 646476793. The next prime is 646476811. The reversal of 646476802 is 208674646.

It is an interprime number because it is at equal distance from previous prime (646476793) and next prime (646476811).

It can be written as a sum of positive squares in 2 ways, for example, as 491996761 + 154480041 = 22181^2 + 12429^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4368013 + ... + 4368160.

Almost surely, 2^646476802 is an apocalyptic number.

646476802 is a deficient number, since it is larger than the sum of its proper divisors (349447034).

646476802 is a wasteful number, since it uses less digits than its factorization.

646476802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8736212.

The product of its (nonzero) digits is 387072, while the sum is 43.

The square root of 646476802 is about 25425.9080860448. The cubic root of 646476802 is about 864.6711757605.

The spelling of 646476802 in words is "six hundred forty-six million, four hundred seventy-six thousand, eight hundred two".