706661540 has 24 divisors (see below), whose sum is σ = 1598142840. Its totient is φ = 260921088.

The previous prime is 706661521. The next prime is 706661563. The reversal of 706661540 is 45166607.

It can be written as a sum of positive squares in 4 ways, for example, as 157602916 + 549058624 = 12554^2 + 23432^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 706661540.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1358705 + ... + 1359224.

It is an arithmetic number, because the mean of its divisors is an integer number (66589285).

Almost surely, 2^706661540 is an apocalyptic number.

It is an amenable number.

706661540 is an abundant number, since it is smaller than the sum of its proper divisors (891481300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

706661540 is a wasteful number, since it uses less digits than its factorization.

706661540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2717951 (or 2717949 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 706661540 is about 26583.1062895215. The cubic root of 706661540 is about 890.7116892985.

The spelling of 706661540 in words is "seven hundred six million, six hundred sixty-one thousand, five hundred forty".