70687969 has 8 divisors (see below), whose sum is σ = 77214240. Its totient is φ = 64178400.

The previous prime is 70687937. The next prime is 70687979. The reversal of 70687969 is 96978607.

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

It is not a de Polignac number, because 70687969 - 2⁵ = 70687937 is a prime.

It is a super-2 number, since 2×70687969² = 9993577922689922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70687909) 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 7 ways as a sum of consecutive naturals, for example, 5709 + ... + 13189.

It is an arithmetic number, because the mean of its divisors is an integer number (9651780).

Almost surely, 2^70687969 is an apocalyptic number.

It is an amenable number.

70687969 is a deficient number, since it is larger than the sum of its proper divisors (6526271).

70687969 is a wasteful number, since it uses less digits than its factorization.

70687969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8351.

The product of its (nonzero) digits is 1143072, while the sum is 52.

The square root of 70687969 is about 8407.6137518323. The cubic root of 70687969 is about 413.4742815497.

The spelling of 70687969 in words is "seventy million, six hundred eighty-seven thousand, nine hundred sixty-nine".