70643406 has 32 divisors (see below), whose sum is σ = 149708160. Its totient is φ = 22160736.

The previous prime is 70643401. The next prime is 70643411. The reversal of 70643406 is 60434607.

It is an interprime number because it is at equal distance from previous prime (70643401) and next prime (70643411).

It is a super-2 number, since 2×70643406² = 9980981622561672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70643401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15925 + ... + 19871.

It is an arithmetic number, because the mean of its divisors is an integer number (4678380).

Almost surely, 2^70643406 is an apocalyptic number.

70643406 is an abundant number, since it is smaller than the sum of its proper divisors (79064754).

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

70643406 is a wasteful number, since it uses less digits than its factorization.

70643406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4128.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 70643406 is about 8404.9631765999. The cubic root of 70643406 is about 413.3873760127.

The spelling of 70643406 in words is "seventy million, six hundred forty-three thousand, four hundred six".