70545620 has 12 divisors (see below), whose sum is σ = 148145844. Its totient is φ = 28218240.

The previous prime is 70545619. The next prime is 70545641. The reversal of 70545620 is 2654507.

It can be written as a sum of positive squares in 2 ways, for example, as 35664784 + 34880836 = 5972^2 + 5906^2 .

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 1763621 + ... + 1763660.

It is an arithmetic number, because the mean of its divisors is an integer number (12345487).

Almost surely, 2^70545620 is an apocalyptic number.

It is an amenable number.

70545620 is an abundant number, since it is smaller than the sum of its proper divisors (77600224).

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

70545620 is a wasteful number, since it uses less digits than its factorization.

70545620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3527290 (or 3527288 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 29.

The square root of 70545620 is about 8399.1440040042. The cubic root of 70545620 is about 413.1965482753.

The spelling of 70545620 in words is "seventy million, five hundred forty-five thousand, six hundred twenty".