70866438 has 32 divisors (see below), whose sum is σ = 150595200. Its totient is φ = 22154880.

The previous prime is 70866437. The next prime is 70866443. The reversal of 70866438 is 83466807.

It is a self number, because there is not a number n which added to its sum of digits gives 70866438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70866437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32713 + ... + 34811.

It is an arithmetic number, because the mean of its divisors is an integer number (4706100).

Almost surely, 2^70866438 is an apocalyptic number.

70866438 is an abundant number, since it is smaller than the sum of its proper divisors (79728762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70866438 is a wasteful number, since it uses less digits than its factorization.

70866438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2452.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 70866438 is about 8418.2205958267. The cubic root of 70866438 is about 413.8219613002.

The spelling of 70866438 in words is "seventy million, eight hundred sixty-six thousand, four hundred thirty-eight".