70820154 has 12 divisors (see below), whose sum is σ = 153443706. Its totient is φ = 23606712.

The previous prime is 70820143. The next prime is 70820171. The reversal of 70820154 is 45102807.

It can be written as a sum of positive squares in only one way, i.e., 60419529 + 10400625 = 7773^2 + 3225^2 .

It is a Curzon number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1967209 + ... + 1967244.

Almost surely, 2^70820154 is an apocalyptic number.

70820154 is an abundant number, since it is smaller than the sum of its proper divisors (82623552).

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

70820154 is a wasteful number, since it uses less digits than its factorization.

70820154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3934461 (or 3934458 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 70820154 is about 8415.4711098072. The cubic root of 70820154 is about 413.7318504405.

The spelling of 70820154 in words is "seventy million, eight hundred twenty thousand, one hundred fifty-four".