70158427 has 4 divisors (see below), whose sum is σ = 70198576. Its totient is φ = 70118280.

The previous prime is 70158409. The next prime is 70158457. The reversal of 70158427 is 72485107.

It is a happy number.

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 70158427 - 2²³ = 61769819 is a prime.

It is a super-2 number, since 2×70158427² = 9844409758228658, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70158392 and 70158401.

It is not an unprimeable number, because it can be changed into a prime (70158457) 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, 17328 + ... + 20989.

It is an arithmetic number, because the mean of its divisors is an integer number (17549644).

Almost surely, 2^70158427 is an apocalyptic number.

70158427 is a deficient number, since it is larger than the sum of its proper divisors (40149).

70158427 is a wasteful number, since it uses less digits than its factorization.

70158427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40148.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 70158427 is about 8376.0627385425. The cubic root of 70158427 is about 412.4392113667.

The spelling of 70158427 in words is "seventy million, one hundred fifty-eight thousand, four hundred twenty-seven".