70669479 has 4 divisors (see below), whose sum is σ = 94225976. Its totient is φ = 47112984.

The previous prime is 70669451. The next prime is 70669499. The reversal of 70669479 is 97496607.

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

It is not a de Polignac number, because 70669479 - 2⁹ = 70668967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70669499) 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, 11778244 + ... + 11778249.

It is an arithmetic number, because the mean of its divisors is an integer number (23556494).

Almost surely, 2^70669479 is an apocalyptic number.

70669479 is a deficient number, since it is larger than the sum of its proper divisors (23556497).

70669479 is a wasteful number, since it uses less digits than its factorization.

70669479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23556496.

The product of its (nonzero) digits is 571536, while the sum is 48.

The square root of 70669479 is about 8406.5140813538. The cubic root of 70669479 is about 413.4382272948.

The spelling of 70669479 in words is "seventy million, six hundred sixty-nine thousand, four hundred seventy-nine".