70878822 has 16 divisors (see below), whose sum is σ = 162008832. Its totient is φ = 20251080.

The previous prime is 70878817. The next prime is 70878859. The reversal of 70878822 is 22887807.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 1687591 = 70878822 / (7 + 0 + 8 + 7 + 8 + 8 + 2 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 843754 + ... + 843837.

It is an arithmetic number, because the mean of its divisors is an integer number (10125552).

Almost surely, 2^70878822 is an apocalyptic number.

70878822 is an abundant number, since it is smaller than the sum of its proper divisors (91130010).

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

70878822 is a wasteful number, since it uses less digits than its factorization.

70878822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1687603.

The product of its (nonzero) digits is 100352, while the sum is 42.

The square root of 70878822 is about 8418.9561110627. The cubic root of 70878822 is about 413.8460652005.

The spelling of 70878822 in words is "seventy million, eight hundred seventy-eight thousand, eight hundred twenty-two".