706451521 has 8 divisors (see below), whose sum is σ = 744062400. Its totient is φ = 668883600.

The previous prime is 706451503. The next prime is 706451527. The reversal of 706451521 is 125154607.

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

It is not a de Polignac number, because 706451521 - 2¹³ = 706443329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (706451527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26340 + ... + 45898.

It is an arithmetic number, because the mean of its divisors is an integer number (93007800).

Almost surely, 2^706451521 is an apocalyptic number.

It is an amenable number.

706451521 is a deficient number, since it is larger than the sum of its proper divisors (37610879).

706451521 is a wasteful number, since it uses less digits than its factorization.

706451521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21479.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 706451521 is about 26579.1557616114. The cubic root of 706451521 is about 890.6234410577.

It can be divided in two parts, 7064 and 51521, that added together give a palindrome (58585).

The spelling of 706451521 in words is "seven hundred six million, four hundred fifty-one thousand, five hundred twenty-one".