70432405 has 8 divisors (see below), whose sum is σ = 84883032. Its totient is φ = 56103168.

The previous prime is 70432399. The next prime is 70432441. The reversal of 70432405 is 50423407.

It can be written as a sum of positive squares in 4 ways, for example, as 5049009 + 65383396 = 2247^2 + 8086^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 70432405 - 2⁷ = 70432277 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 70432405.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 29064 + ... + 31393.

It is an arithmetic number, because the mean of its divisors is an integer number (10610379).

Almost surely, 2^70432405 is an apocalyptic number.

It is an amenable number.

70432405 is a deficient number, since it is larger than the sum of its proper divisors (14450627).

70432405 is a wasteful number, since it uses less digits than its factorization.

70432405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60695.

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 70432405 is about 8392.4016228967. The cubic root of 70432405 is about 412.9753907014.

The spelling of 70432405 in words is "seventy million, four hundred thirty-two thousand, four hundred five".