70208427 has 4 divisors (see below), whose sum is σ = 93611240. Its totient is φ = 46805616.

The previous prime is 70208399. The next prime is 70208431. The reversal of 70208427 is 72480207.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72480207 = 3 ⋅24160069.

It is not a de Polignac number, because 70208427 - 2¹⁴ = 70192043 is a prime.

It is a super-5 number, since 5×70208427⁵ (a number of 40 digits) contains 55555 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70208394 and 70208403.

It is not an unprimeable number, because it can be changed into a prime (70208927) 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, 11701402 + ... + 11701407.

It is an arithmetic number, because the mean of its divisors is an integer number (23402810).

Almost surely, 2^70208427 is an apocalyptic number.

70208427 is a deficient number, since it is larger than the sum of its proper divisors (23402813).

70208427 is a wasteful number, since it uses less digits than its factorization.

70208427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23402812.

The product of its (nonzero) digits is 6272, while the sum is 30.

The square root of 70208427 is about 8379.0469028404. The cubic root of 70208427 is about 412.5371661646.

The spelling of 70208427 in words is "seventy million, two hundred eight thousand, four hundred twenty-seven".