70442643 has 8 divisors (see below), whose sum is σ = 96107968. Its totient is φ = 45869544.

The previous prime is 70442639. The next prime is 70442651. The reversal of 70442643 is 34624407.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70442643 - 2² = 70442639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70442643.

It is not an unprimeable number, because it can be changed into a prime (70442623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272905 + ... + 273162.

It is an arithmetic number, because the mean of its divisors is an integer number (12013496).

Almost surely, 2^70442643 is an apocalyptic number.

70442643 is a deficient number, since it is larger than the sum of its proper divisors (25665325).

70442643 is a wasteful number, since it uses less digits than its factorization.

70442643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546113.

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 70442643 is about 8393.0115572421. The cubic root of 70442643 is about 412.9953996599.

The spelling of 70442643 in words is "seventy million, four hundred forty-two thousand, six hundred forty-three".