70881743 has 4 divisors (see below), whose sum is σ = 72610608. Its totient is φ = 69152880.

The previous prime is 70881737. The next prime is 70881763. The reversal of 70881743 is 34718807.

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 70881743 - 2⁸ = 70881487 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70881697 and 70881706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70881703) 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, 864371 + ... + 864452.

It is an arithmetic number, because the mean of its divisors is an integer number (18152652).

Almost surely, 2^70881743 is an apocalyptic number.

70881743 is a deficient number, since it is larger than the sum of its proper divisors (1728865).

70881743 is a wasteful number, since it uses less digits than its factorization.

70881743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1728864.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 70881743 is about 8419.1295868397. The cubic root of 70881743 is about 413.8517501508.

The spelling of 70881743 in words is "seventy million, eight hundred eighty-one thousand, seven hundred forty-three".