70473217 has 4 divisors (see below), whose sum is σ = 70741440. Its totient is φ = 70204996.

The previous prime is 70473209. The next prime is 70473253. The reversal of 70473217 is 71237407.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 71237407 = 131 ⋅543797.

It is a cyclic number.

It is not a de Polignac number, because 70473217 - 2³ = 70473209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70473287) 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, 133717 + ... + 134242.

It is an arithmetic number, because the mean of its divisors is an integer number (17685360).

Almost surely, 2^70473217 is an apocalyptic number.

It is an amenable number.

70473217 is a deficient number, since it is larger than the sum of its proper divisors (268223).

70473217 is a wasteful number, since it uses less digits than its factorization.

70473217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268222.

The product of its (nonzero) digits is 8232, while the sum is 31.

The square root of 70473217 is about 8394.8327559279. The cubic root of 70473217 is about 413.0551413847.

The spelling of 70473217 in words is "seventy million, four hundred seventy-three thousand, two hundred seventeen".