70689143 has 8 divisors (see below), whose sum is σ = 84300288. Its totient is φ = 57956184.

The previous prime is 70689137. The next prime is 70689149. The reversal of 70689143 is 34198607.

It is an interprime number because it is at equal distance from previous prime (70689137) and next prime (70689149).

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 70689143 - 2⁶ = 70689079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70689097 and 70689106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70689149) 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, 219371 + ... + 219692.

It is an arithmetic number, because the mean of its divisors is an integer number (10537536).

Almost surely, 2^70689143 is an apocalyptic number.

70689143 is a deficient number, since it is larger than the sum of its proper divisors (13611145).

70689143 is a wasteful number, since it uses less digits than its factorization.

70689143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439093.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 70689143 is about 8407.6835692122. The cubic root of 70689143 is about 413.4765705584.

The spelling of 70689143 in words is "seventy million, six hundred eighty-nine thousand, one hundred forty-three".