70806669 has 8 divisors (see below), whose sum is σ = 95098560. Its totient is φ = 46859616.

The previous prime is 70806653. The next prime is 70806689. The reversal of 70806669 is 96660807.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70806669 - 2⁴ = 70806653 is a prime.

It is a super-2 number, since 2×70806669² = 10027168749751122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 70806669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70806689) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85729 + ... + 86550.

It is an arithmetic number, because the mean of its divisors is an integer number (11887320).

Almost surely, 2^70806669 is an apocalyptic number.

It is an amenable number.

70806669 is a deficient number, since it is larger than the sum of its proper divisors (24291891).

70806669 is a wasteful number, since it uses less digits than its factorization.

70806669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172419.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 70806669 is about 8414.6698687471. The cubic root of 70806669 is about 413.7055889511.

The spelling of 70806669 in words is "seventy million, eight hundred six thousand, six hundred sixty-nine".