746129521 has 8 divisors (see below), whose sum is σ = 771899688. Its totient is φ = 720720000.

The previous prime is 746129519. The next prime is 746129533. The reversal of 746129521 is 125921647.

It can be written as a sum of positive squares in 4 ways, for example, as 51279921 + 694849600 = 7161^2 + 26360^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 746129521 - 2¹ = 746129519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (746129561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85950 + ... + 94231.

It is an arithmetic number, because the mean of its divisors is an integer number (96487461).

Almost surely, 2^746129521 is an apocalyptic number.

It is an amenable number.

746129521 is a deficient number, since it is larger than the sum of its proper divisors (25770167).

746129521 is a wasteful number, since it uses less digits than its factorization.

746129521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180323.

The product of its digits is 30240, while the sum is 37.

The square root of 746129521 is about 27315.3715149547. The cubic root of 746129521 is about 906.9946829989.

The spelling of 746129521 in words is "seven hundred forty-six million, one hundred twenty-nine thousand, five hundred twenty-one".