70928743 has 4 divisors (see below), whose sum is σ = 75101040. Its totient is φ = 66756448.

The previous prime is 70928731. The next prime is 70928749. The reversal of 70928743 is 34782907.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70928743 - 2²¹ = 68831591 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70928696 and 70928705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70928749) 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 3 ways as a sum of consecutive naturals, for example, 2086123 + ... + 2086156.

It is an arithmetic number, because the mean of its divisors is an integer number (18775260).

Almost surely, 2^70928743 is an apocalyptic number.

70928743 is a deficient number, since it is larger than the sum of its proper divisors (4172297).

70928743 is a wasteful number, since it uses less digits than its factorization.

70928743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4172296.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 70928743 is about 8421.9203867052. The cubic root of 70928743 is about 413.9432016956.

The spelling of 70928743 in words is "seventy million, nine hundred twenty-eight thousand, seven hundred forty-three".