70081378 has 8 divisors (see below), whose sum is σ = 111305772. Its totient is φ = 32979456.

The previous prime is 70081369. The next prime is 70081379. The reversal of 70081378 is 87318007.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 56295009 + 13786369 = 7503^2 + 3713^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×70081378² = 9822799084757768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 2061217 = 70081378 / (7 + 0 + 0 + 8 + 1 + 3 + 7 + 8).

It is not an unprimeable number, because it can be changed into a prime (70081379) 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 3 ways as a sum of consecutive naturals, for example, 1030575 + ... + 1030642.

Almost surely, 2^70081378 is an apocalyptic number.

70081378 is a deficient number, since it is larger than the sum of its proper divisors (41224394).

70081378 is a wasteful number, since it uses less digits than its factorization.

70081378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061236.

The product of its (nonzero) digits is 9408, while the sum is 34.

The square root of 70081378 is about 8371.4621184116. The cubic root of 70081378 is about 412.2881738255.

The spelling of 70081378 in words is "seventy million, eighty-one thousand, three hundred seventy-eight".