70421646 has 32 divisors (see below), whose sum is σ = 146082816. Its totient is φ = 22608000.

The previous prime is 70421629. The next prime is 70421717. The reversal of 70421646 is 64612407.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44041 + ... + 45611.

It is an arithmetic number, because the mean of its divisors is an integer number (4565088).

Almost surely, 2^70421646 is an apocalyptic number.

70421646 is an abundant number, since it is smaller than the sum of its proper divisors (75661170).

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

70421646 is a wasteful number, since it uses less digits than its factorization.

70421646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1848.

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

The square root of 70421646 is about 8391.7606019238. The cubic root of 70421646 is about 412.9543614205.

The spelling of 70421646 in words is "seventy million, four hundred twenty-one thousand, six hundred forty-six".