70666830 has 96 divisors (see below), whose sum is σ = 205287264. Its totient is φ = 17387136.

The previous prime is 70666829. The next prime is 70666831. The reversal of 70666830 is 3866607.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (70666829) and next prime (70666831).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70666831) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30472 + ... + 32708.

It is an arithmetic number, because the mean of its divisors is an integer number (2138409).

Almost surely, 2^70666830 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70666830, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102643632).

70666830 is an abundant number, since it is smaller than the sum of its proper divisors (134620434).

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

70666830 is a wasteful number, since it uses less digits than its factorization.

70666830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2272 (or 2260 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 70666830 is about 8406.3565234886. The cubic root of 70666830 is about 413.4330614082.

The spelling of 70666830 in words is "seventy million, six hundred sixty-six thousand, eight hundred thirty".