70078217 has 12 divisors (see below), whose sum is σ = 79923984. Its totient is φ = 60932520.

The previous prime is 70078163. The next prime is 70078231. The reversal of 70078217 is 71287007.

It is not a de Polignac number, because 70078217 - 2¹⁰ = 70077193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70078117) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 203 + ... + 11840.

It is an arithmetic number, because the mean of its divisors is an integer number (6660332).

Almost surely, 2^70078217 is an apocalyptic number.

It is an amenable number.

70078217 is a deficient number, since it is larger than the sum of its proper divisors (9845767).

70078217 is a wasteful number, since it uses less digits than its factorization.

70078217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12100 (or 12077 counting only the distinct ones).

The product of its (nonzero) digits is 5488, while the sum is 32.

The square root of 70078217 is about 8371.2733201109. The cubic root of 70078217 is about 412.2819750199.

The spelling of 70078217 in words is "seventy million, seventy-eight thousand, two hundred seventeen".