70549818 has 32 divisors (see below), whose sum is σ = 143095680. Its totient is φ = 23186880.

The previous prime is 70549811. The next prime is 70549849. The reversal of 70549818 is 81894507.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 70549818.

It is not an unprimeable number, because it can be changed into a prime (70549811) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181168 + ... + 181556.

It is an arithmetic number, because the mean of its divisors is an integer number (4471740).

Almost surely, 2^70549818 is an apocalyptic number.

70549818 is an abundant number, since it is smaller than the sum of its proper divisors (72545862).

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

70549818 is a wasteful number, since it uses less digits than its factorization.

70549818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742.

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 70549818 is about 8399.3939067054. The cubic root of 70549818 is about 413.2047442233.

The spelling of 70549818 in words is "seventy million, five hundred forty-nine thousand, eight hundred eighteen".