70666854 has 16 divisors (see below), whose sum is σ = 142006080. Its totient is φ = 23443560.

The previous prime is 70666831. The next prime is 70666859. The reversal of 70666854 is 45866607.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70666859) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26644 + ... + 29175.

It is an arithmetic number, because the mean of its divisors is an integer number (8875380).

Almost surely, 2^70666854 is an apocalyptic number.

70666854 is an abundant number, since it is smaller than the sum of its proper divisors (71339226).

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

70666854 is a wasteful number, since it uses less digits than its factorization.

70666854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56035.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 70666854 is about 8406.3579509797. The cubic root of 70666854 is about 413.4331082119.

The spelling of 70666854 in words is "seventy million, six hundred sixty-six thousand, eight hundred fifty-four".