70287023689 has 3 divisors (see below), whose sum is σ = 70287288807. Its totient is φ = 70286758572.

The previous prime is 70287023669. The next prime is 70287023701. The reversal of 70287023689 is 98632078207.

The square root of 70287023689 is 265117.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 28626948025 + 41660075664 = 169195^2 + 204108^2 .

It is not a de Polignac number, because 70287023689 - 2⁵ = 70287023657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70287023669) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 132559 + ... + 397675.

It is an arithmetic number, because the mean of its divisors is an integer number (23429096269).

Almost surely, 2^70287023689 is an apocalyptic number.

70287023689 is the 265117-th square number.

70287023689 is the 132559-th centered octagonal number.

It is an amenable number.

70287023689 is a deficient number, since it is larger than the sum of its proper divisors (265118).

70287023689 is an frugal number, since it uses more digits than its factorization.

70287023689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530234 (or 265117 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 70287023689 in words is "seventy billion, two hundred eighty-seven million, twenty-three thousand, six hundred eighty-nine".