1660464607 has 2 divisors, whose sum is σ = 1660464608. Its totient is φ = 1660464606.

The previous prime is 1660464593. The next prime is 1660464677. The reversal of 1660464607 is 7064640661.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1660464607 - 2²⁷ = 1526246879 is a prime.

It is a super-2 number, since 2×1660464607² = 5514285422199328898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1660464607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1660464677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 830232303 + 830232304.

It is an arithmetic number, because the mean of its divisors is an integer number (830232304).

Almost surely, 2^1660464607 is an apocalyptic number.

1660464607 is a deficient number, since it is larger than the sum of its proper divisors (1).

1660464607 is an equidigital number, since it uses as much as digits as its factorization.

1660464607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 145152, while the sum is 40.

The square root of 1660464607 is about 40748.7988411929. The cubic root of 1660464607 is about 1184.1586025113.

The spelling of 1660464607 in words is "one billion, six hundred sixty million, four hundred sixty-four thousand, six hundred seven".