70665499 has 4 divisors (see below), whose sum is σ = 73737936. Its totient is φ = 67593064.

The previous prime is 70665473. The next prime is 70665563. The reversal of 70665499 is 99456607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99456607 = 107 ⋅929501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70665499 is a prime.

It is a super-2 number, since 2×70665499² = 9987225497838002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70665409) 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, 1536184 + ... + 1536229.

It is an arithmetic number, because the mean of its divisors is an integer number (18434484).

Almost surely, 2^70665499 is an apocalyptic number.

70665499 is a deficient number, since it is larger than the sum of its proper divisors (3072437).

70665499 is a wasteful number, since it uses less digits than its factorization.

70665499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3072436.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 70665499 is about 8406.2773568328. The cubic root of 70665499 is about 413.4304657404.

The spelling of 70665499 in words is "seventy million, six hundred sixty-five thousand, four hundred ninety-nine".