1660700894 has 4 divisors (see below), whose sum is σ = 2491051344. Its totient is φ = 830350446.

The previous prime is 1660700891. The next prime is 1660700897. The reversal of 1660700894 is 4980070661.

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

It is an interprime number because it is at equal distance from previous prime (1660700891) and next prime (1660700897).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1660700891) 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 as a sum of consecutive naturals, namely, 415175222 + ... + 415175225.

It is an arithmetic number, because the mean of its divisors is an integer number (622762836).

Almost surely, 2^1660700894 is an apocalyptic number.

1660700894 is a deficient number, since it is larger than the sum of its proper divisors (830350450).

1660700894 is an equidigital number, since it uses as much as digits as its factorization.

1660700894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830350449.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 1660700894 is about 40751.6980505107. The cubic root of 1660700894 is about 1184.2147691231.

The spelling of 1660700894 in words is "one billion, six hundred sixty million, seven hundred thousand, eight hundred ninety-four".