746835221 has 16 divisors (see below), whose sum is σ = 821620800. Its totient is φ = 673226880.

The previous prime is 746835163. The next prime is 746835281. The reversal of 746835221 is 122538647.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 746835221 - 2²⁶ = 679726357 is a prime.

It is a super-2 number, since 2×746835221² = 1115525694652237682, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (746835281) 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, 871025 + ... + 871881.

It is an arithmetic number, because the mean of its divisors is an integer number (51351300).

Almost surely, 2^746835221 is an apocalyptic number.

It is an amenable number.

746835221 is a deficient number, since it is larger than the sum of its proper divisors (74785579).

746835221 is a wasteful number, since it uses less digits than its factorization.

746835221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444.

The product of its digits is 80640, while the sum is 38.

The square root of 746835221 is about 27328.2860970095. The cubic root of 746835221 is about 907.2805424202.

The spelling of 746835221 in words is "seven hundred forty-six million, eight hundred thirty-five thousand, two hundred twenty-one".