667701074 has 4 divisors (see below), whose sum is σ = 1001551614. Its totient is φ = 333850536.

The previous prime is 667701043. The next prime is 667701091. The reversal of 667701074 is 470107766.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 588402049 + 79299025 = 24257^2 + 8905^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166925267 + ... + 166925270.

Almost surely, 2^667701074 is an apocalyptic number.

667701074 is a deficient number, since it is larger than the sum of its proper divisors (333850540).

667701074 is a wasteful number, since it uses less digits than its factorization.

667701074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333850539.

The product of its (nonzero) digits is 49392, while the sum is 38.

The square root of 667701074 is about 25839.9124224522. The cubic root of 667701074 is about 874.0320502746.

The spelling of 667701074 in words is "six hundred sixty-seven million, seven hundred one thousand, seventy-four".