70363986 has 128 divisors (see below), whose sum is σ = 192430080. Its totient is φ = 16646400.

The previous prime is 70363963. The next prime is 70363987. The reversal of 70363986 is 68936307.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (70363987) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2269791 + ... + 2269821.

It is an arithmetic number, because the mean of its divisors is an integer number (1503360).

Almost surely, 2^70363986 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70363986, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96215040).

70363986 is an abundant number, since it is smaller than the sum of its proper divisors (122066094).

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

70363986 is a wasteful number, since it uses less digits than its factorization.

70363986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 70363986 is about 8388.3243857161. The cubic root of 70363986 is about 412.8416240665.

The spelling of 70363986 in words is "seventy million, three hundred sixty-three thousand, nine hundred eighty-six".