70666530 has 32 divisors (see below), whose sum is σ = 185018688. Its totient is φ = 17131200.

The previous prime is 70666523. The next prime is 70666571. The reversal of 70666530 is 3566607.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 70666491 and 70666500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106741 + ... + 107400.

It is an arithmetic number, because the mean of its divisors is an integer number (5781834).

Almost surely, 2^70666530 is an apocalyptic number.

70666530 is an abundant number, since it is smaller than the sum of its proper divisors (114352158).

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

70666530 is a wasteful number, since it uses less digits than its factorization.

70666530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214162.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 70666530 is about 8406.3386798296. The cubic root of 70666530 is about 413.4324763620.

The spelling of 70666530 in words is "seventy million, six hundred sixty-six thousand, five hundred thirty".