70142646 has 64 divisors (see below), whose sum is σ = 175288320. Its totient is φ = 18247680.

The previous prime is 70142641. The next prime is 70142647. The reversal of 70142646 is 64624107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70142641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20550 + ... + 23718.

It is an arithmetic number, because the mean of its divisors is an integer number (2738880).

Almost surely, 2^70142646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70142646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87644160).

70142646 is an abundant number, since it is smaller than the sum of its proper divisors (105145674).

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

70142646 is a wasteful number, since it uses less digits than its factorization.

70142646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3229.

The product of its (nonzero) digits is 8064, while the sum is 30.

The square root of 70142646 is about 8375.1206558473. The cubic root of 70142646 is about 412.4082852112.

The spelling of 70142646 in words is "seventy million, one hundred forty-two thousand, six hundred forty-six".