70665838 has 24 divisors (see below), whose sum is σ = 114180192. Its totient is φ = 32687424.

The previous prime is 70665809. The next prime is 70665841. The reversal of 70665838 is 83856607.

It is a junction number, because it is equal to n+sod(n) for n = 70665794 and 70665803.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 152395 + ... + 152857.

It is an arithmetic number, because the mean of its divisors is an integer number (4757508).

Almost surely, 2^70665838 is an apocalyptic number.

70665838 is a deficient number, since it is larger than the sum of its proper divisors (43514354).

70665838 is a wasteful number, since it uses less digits than its factorization.

70665838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 70665838 is about 8406.2975203118. The cubic root of 70665838 is about 413.4311268489.

The spelling of 70665838 in words is "seventy million, six hundred sixty-five thousand, eight hundred thirty-eight".