70689543 has 4 divisors (see below), whose sum is σ = 94252728. Its totient is φ = 47126360.

The previous prime is 70689539. The next prime is 70689547. The reversal of 70689543 is 34598607.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34598607 = 3 ⋅11532869.

It is an interprime number because it is at equal distance from previous prime (70689539) and next prime (70689547).

It is a cyclic number.

It is not a de Polignac number, because 70689543 - 2² = 70689539 is a prime.

It is a super-2 number, since 2×70689543² = 9994022979097698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 70689495 and 70689504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70689547) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11781588 + ... + 11781593.

It is an arithmetic number, because the mean of its divisors is an integer number (23563182).

Almost surely, 2^70689543 is an apocalyptic number.

70689543 is a deficient number, since it is larger than the sum of its proper divisors (23563185).

70689543 is a wasteful number, since it uses less digits than its factorization.

70689543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23563184.

The product of its (nonzero) digits is 181440, while the sum is 42.

The square root of 70689543 is about 8407.7073569434. The cubic root of 70689543 is about 413.4773504533.

The spelling of 70689543 in words is "seventy million, six hundred eighty-nine thousand, five hundred forty-three".