70447381 has 8 divisors (see below), whose sum is σ = 71539200. Its totient is φ = 69360720.

The previous prime is 70447369. The next prime is 70447411. The reversal of 70447381 is 18374407.

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 70447381 - 2¹⁹ = 69923093 is a prime.

It is a super-2 number, since 2×70447381² = 9925666979518322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70447331) 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, 33015 + ... + 35083.

It is an arithmetic number, because the mean of its divisors is an integer number (8942400).

Almost surely, 2^70447381 is an apocalyptic number.

It is an amenable number.

70447381 is a deficient number, since it is larger than the sum of its proper divisors (1091819).

70447381 is a wasteful number, since it uses less digits than its factorization.

70447381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2579.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 70447381 is about 8393.2938111328. The cubic root of 70447381 is about 413.0046588636.

The spelling of 70447381 in words is "seventy million, four hundred forty-seven thousand, three hundred eighty-one".