70816667 has 4 divisors (see below), whose sum is σ = 74543880. Its totient is φ = 67089456.

The previous prime is 70816649. The next prime is 70816673. The reversal of 70816667 is 76661807.

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

It is not a de Polignac number, because 70816667 - 2⁸ = 70816411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70816367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1863578 + ... + 1863615.

It is an arithmetic number, because the mean of its divisors is an integer number (18635970).

Almost surely, 2^70816667 is an apocalyptic number.

70816667 is a deficient number, since it is larger than the sum of its proper divisors (3727213).

70816667 is a wasteful number, since it uses less digits than its factorization.

70816667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3727212.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 70816667 is about 8415.2639293132. The cubic root of 70816667 is about 413.7250599693.

The spelling of 70816667 in words is "seventy million, eight hundred sixteen thousand, six hundred sixty-seven".