746449781 has 12 divisors (see below), whose sum is σ = 947257920. Its totient is φ = 581648760.

The previous prime is 746449777. The next prime is 746449783. The reversal of 746449781 is 187944647.

It is not a de Polignac number, because 746449781 - 2² = 746449777 is a prime.

It is a super-2 number, since 2×746449781² = 1114374551109895922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (746449783) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 691901 + ... + 692978.

It is an arithmetic number, because the mean of its divisors is an integer number (78938160).

Almost surely, 2^746449781 is an apocalyptic number.

It is an amenable number.

746449781 is a deficient number, since it is larger than the sum of its proper divisors (200808139).

746449781 is a wasteful number, since it uses less digits than its factorization.

746449781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1384904 (or 1384897 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 50.

The square root of 746449781 is about 27321.2331529893. The cubic root of 746449781 is about 907.1244337365.

The spelling of 746449781 in words is "seven hundred forty-six million, four hundred forty-nine thousand, seven hundred eighty-one".