70939806 has 32 divisors (see below), whose sum is σ = 170684160. Its totient is φ = 19201536.

The previous prime is 70939789. The next prime is 70939807. The reversal of 70939806 is 60893907.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70939807) 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, 43651 + ... + 45246.

It is an arithmetic number, because the mean of its divisors is an integer number (5333880).

Almost surely, 2^70939806 is an apocalyptic number.

70939806 is an abundant number, since it is smaller than the sum of its proper divisors (99744354).

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

70939806 is a wasteful number, since it uses less digits than its factorization.

70939806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88928.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 70939806 is about 8422.5771590410. The cubic root of 70939806 is about 413.9647219584.

The spelling of 70939806 in words is "seventy million, nine hundred thirty-nine thousand, eight hundred six".