70427666 has 4 divisors (see below), whose sum is σ = 105641502. Its totient is φ = 35213832.

The previous prime is 70427659. The next prime is 70427677. The reversal of 70427666 is 66672407.

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., 70073641 + 354025 = 8371^2 + 595^2 .

It is a super-2 number, since 2×70427666² = 9920112276415112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17606915 + ... + 17606918.

Almost surely, 2^70427666 is an apocalyptic number.

70427666 is a deficient number, since it is larger than the sum of its proper divisors (35213836).

70427666 is a wasteful number, since it uses less digits than its factorization.

70427666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35213835.

The product of its (nonzero) digits is 84672, while the sum is 38.

The square root of 70427666 is about 8392.1192794192. The cubic root of 70427666 is about 412.9661282307.

The spelling of 70427666 in words is "seventy million, four hundred twenty-seven thousand, six hundred sixty-six".