70523471 has 4 divisors (see below), whose sum is σ = 70540872. Its totient is φ = 70506072.

The previous prime is 70523449. The next prime is 70523489. The reversal of 70523471 is 17432507.

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

It is a cyclic number.

It is not a de Polignac number, because 70523471 - 2⁶ = 70523407 is a prime.

It is a super-3 number, since 3×70523471³ (a number of 25 digits) contains 333 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 (70523491) 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, 941 + ... + 11913.

It is an arithmetic number, because the mean of its divisors is an integer number (17635218).

Almost surely, 2^70523471 is an apocalyptic number.

70523471 is a deficient number, since it is larger than the sum of its proper divisors (17401).

70523471 is a wasteful number, since it uses less digits than its factorization.

70523471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17400.

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 70523471 is about 8397.8253732737. The cubic root of 70523471 is about 413.1533003822.

Adding to 70523471 its reverse (17432507), we get a palindrome (87955978).

The spelling of 70523471 in words is "seventy million, five hundred twenty-three thousand, four hundred seventy-one".