70421666 has 16 divisors (see below), whose sum is σ = 120839040. Its totient is φ = 30151680.

The previous prime is 70421629. The next prime is 70421717. The reversal of 70421666 is 66612407.

It is a super-2 number, since 2×70421666² = 9918422084431112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19490 + ... + 22818.

It is an arithmetic number, because the mean of its divisors is an integer number (7552440).

Almost surely, 2^70421666 is an apocalyptic number.

70421666 is a deficient number, since it is larger than the sum of its proper divisors (50417374).

70421666 is a wasteful number, since it uses less digits than its factorization.

70421666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4849.

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 70421666 is about 8391.7617935687. The cubic root of 70421666 is about 412.9544005140.

The spelling of 70421666 in words is "seventy million, four hundred twenty-one thousand, six hundred sixty-six".