70716591 has 16 divisors (see below), whose sum is σ = 114289920. Its totient is φ = 42858360.

The previous prime is 70716563. The next prime is 70716593. The reversal of 70716591 is 19561707.

It is not a de Polignac number, because 70716591 - 2¹⁴ = 70700207 is a prime.

It is a super-2 number, since 2×70716591² = 10001672485322562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70716593) 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, 118755 + ... + 119348.

It is an arithmetic number, because the mean of its divisors is an integer number (7143120).

Almost surely, 2^70716591 is an apocalyptic number.

70716591 is a deficient number, since it is larger than the sum of its proper divisors (43573329).

70716591 is a wasteful number, since it uses less digits than its factorization.

70716591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238123 (or 238117 counting only the distinct ones).

The product of its (nonzero) digits is 13230, while the sum is 36.

The square root of 70716591 is about 8409.3157272159. The cubic root of 70716591 is about 413.5300801254.

The spelling of 70716591 in words is "seventy million, seven hundred sixteen thousand, five hundred ninety-one".