627953481 has 9 divisors (see below), whose sum is σ = 907152519. Its totient is φ = 418585536.

The previous prime is 627953479. The next prime is 627953503. The reversal of 627953481 is 184359726.

The square root of 627953481 is 25059.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 414326025 + 213627456 = 20355^2 + 14616^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 627953481 - 2¹ = 627953479 is a prime.

It is a super-2 number, since 2×627953481² = 788651148600034722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (627953411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 71001 + ... + 79353.

Almost surely, 2^627953481 is an apocalyptic number.

627953481 is the 25059-th square number.

627953481 is the 12530-th centered octagonal number.

It is an amenable number.

627953481 is a deficient number, since it is larger than the sum of its proper divisors (279199038).

627953481 is an frugal number, since it uses more digits than its factorization.

627953481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16712 (or 8356 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The cubic root of 627953481 is about 856.3326258661.

The spelling of 627953481 in words is "six hundred twenty-seven million, nine hundred fifty-three thousand, four hundred eighty-one".