1470628661 has 4 divisors (see below), whose sum is σ = 1470872172. Its totient is φ = 1470385152.

The previous prime is 1470628597. The next prime is 1470628693. The reversal of 1470628661 is 1668260741.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1167520561 + 303108100 = 34169^2 + 17410^2 .

It is a cyclic number.

It is not a de Polignac number, because 1470628661 - 2⁶ = 1470628597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1470678661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112460 + ... + 124853.

It is an arithmetic number, because the mean of its divisors is an integer number (367718043).

Almost surely, 2^1470628661 is an apocalyptic number.

It is an amenable number.

1470628661 is a deficient number, since it is larger than the sum of its proper divisors (243511).

1470628661 is an equidigital number, since it uses as much as digits as its factorization.

1470628661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243510.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 1470628661 is about 38348.7765254643. The cubic root of 1470628661 is about 1137.1934298574.

The spelling of 1470628661 in words is "one billion, four hundred seventy million, six hundred twenty-eight thousand, six hundred sixty-one".