746821945 has 4 divisors (see below), whose sum is σ = 896186340. Its totient is φ = 597457552.

The previous prime is 746821927. The next prime is 746821969. The reversal of 746821945 is 549128647.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 304014096 + 442807849 = 17436^2 + 21043^2 .

It is a cyclic number.

It is not a de Polignac number, because 746821945 - 2¹⁵ = 746789177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 746821895 and 746821904.

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, 74682190 + ... + 74682199.

It is an arithmetic number, because the mean of its divisors is an integer number (224046585).

Almost surely, 2^746821945 is an apocalyptic number.

It is an amenable number.

746821945 is a deficient number, since it is larger than the sum of its proper divisors (149364395).

746821945 is a wasteful number, since it uses less digits than its factorization.

746821945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149364394.

The product of its digits is 483840, while the sum is 46.

The square root of 746821945 is about 27328.0431974190. The cubic root of 746821945 is about 907.2751663445.

The spelling of 746821945 in words is "seven hundred forty-six million, eight hundred twenty-one thousand, nine hundred forty-five".