70472869 has 4 divisors (see below), whose sum is σ = 70541100. Its totient is φ = 70404640.

The previous prime is 70472839. The next prime is 70472917. The reversal of 70472869 is 96827407.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67864644 + 2608225 = 8238^2 + 1615^2 .

It is a cyclic number.

It is not a de Polignac number, because 70472869 - 2¹¹ = 70470821 is a prime.

It is a super-2 number, since 2×70472869² = 9932850530182322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70472839) 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, 32542 + ... + 34639.

It is an arithmetic number, because the mean of its divisors is an integer number (17635275).

Almost surely, 2^70472869 is an apocalyptic number.

It is an amenable number.

70472869 is a deficient number, since it is larger than the sum of its proper divisors (68231).

70472869 is a wasteful number, since it uses less digits than its factorization.

70472869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68230.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 70472869 is about 8394.8120288664. The cubic root of 70472869 is about 413.0544614885.

The spelling of 70472869 in words is "seventy million, four hundred seventy-two thousand, eight hundred sixty-nine".