70216529 has 4 divisors (see below), whose sum is σ = 70483776. Its totient is φ = 69949284.

The previous prime is 70216501. The next prime is 70216541. The reversal of 70216529 is 92561207.

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.

It is a cyclic number.

It is not a de Polignac number, because 70216529 - 2²⁰ = 69167953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70216495 and 70216504.

It is not an unprimeable number, because it can be changed into a prime (70212529) 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, 133229 + ... + 133754.

It is an arithmetic number, because the mean of its divisors is an integer number (17620944).

Almost surely, 2^70216529 is an apocalyptic number.

It is an amenable number.

70216529 is a deficient number, since it is larger than the sum of its proper divisors (267247).

70216529 is a wasteful number, since it uses less digits than its factorization.

70216529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267246.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 70216529 is about 8379.5303567682. The cubic root of 70216529 is about 412.5530343811.

The spelling of 70216529 in words is "seventy million, two hundred sixteen thousand, five hundred twenty-nine".