70617231 has 16 divisors (see below), whose sum is σ = 105945600. Its totient is φ = 46480824.

The previous prime is 70617229. The next prime is 70617241. The reversal of 70617231 is 13271607.

It is not a de Polignac number, because 70617231 - 2¹ = 70617229 is a prime.

It is a super-2 number, since 2×70617231² = 9973586628214722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 70617195 and 70617204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70617241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14421 + ... + 18686.

It is an arithmetic number, because the mean of its divisors is an integer number (6621600).

Almost surely, 2^70617231 is an apocalyptic number.

70617231 is a deficient number, since it is larger than the sum of its proper divisors (35328369).

70617231 is a wasteful number, since it uses less digits than its factorization.

70617231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33195 (or 33189 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 70617231 is about 8403.4059166507. The cubic root of 70617231 is about 413.3363132084.

Adding to 70617231 its reverse (13271607), we get a palindrome (83888838).

The spelling of 70617231 in words is "seventy million, six hundred seventeen thousand, two hundred thirty-one".