70427381 has 8 divisors (see below), whose sum is σ = 74473728. Its totient is φ = 66492000.

The previous prime is 70427377. The next prime is 70427501. The reversal of 70427381 is 18372407.

It is a happy number.

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 70427381 - 2² = 70427377 is a prime.

It is a super-2 number, since 2×70427381² = 9920031989038322, 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 (70427321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26435 + ... + 28976.

It is an arithmetic number, because the mean of its divisors is an integer number (9309216).

Almost surely, 2^70427381 is an apocalyptic number.

It is an amenable number.

70427381 is a deficient number, since it is larger than the sum of its proper divisors (4046347).

70427381 is a wasteful number, since it uses less digits than its factorization.

70427381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55483.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 70427381 is about 8392.1022991858. The cubic root of 70427381 is about 412.9655711792.

Adding to 70427381 its reverse (18372407), we get a palindrome (88799788).

The spelling of 70427381 in words is "seventy million, four hundred twenty-seven thousand, three hundred eighty-one".