70543649 has 8 divisors (see below), whose sum is σ = 77164320. Its totient is φ = 63957600.

The previous prime is 70543643. The next prime is 70543651. The reversal of 70543649 is 94634507.

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 70543649 - 2⁸ = 70543393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70543643) 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, 4292 + ... + 12629.

It is an arithmetic number, because the mean of its divisors is an integer number (9645540).

Almost surely, 2^70543649 is an apocalyptic number.

It is an amenable number.

70543649 is a deficient number, since it is larger than the sum of its proper divisors (6620671).

70543649 is a wasteful number, since it uses less digits than its factorization.

70543649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17311.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 70543649 is about 8399.0266697993. The cubic root of 70543649 is about 413.1927000894.

The spelling of 70543649 in words is "seventy million, five hundred forty-three thousand, six hundred forty-nine".