70814381 has 4 divisors (see below), whose sum is σ = 77252064. Its totient is φ = 64376700.

The previous prime is 70814353. The next prime is 70814399. The reversal of 70814381 is 18341807.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70814381 - 2¹⁰ = 70813357 is a prime.

It is a super-3 number, since 3×70814381³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70814581) 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, 3218825 + ... + 3218846.

It is an arithmetic number, because the mean of its divisors is an integer number (19313016).

Almost surely, 2^70814381 is an apocalyptic number.

It is an amenable number.

70814381 is a deficient number, since it is larger than the sum of its proper divisors (6437683).

70814381 is a wasteful number, since it uses less digits than its factorization.

70814381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6437682.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 70814381 is about 8415.1281036001. The cubic root of 70814381 is about 413.7206081658.

The spelling of 70814381 in words is "seventy million, eight hundred fourteen thousand, three hundred eighty-one".