70509023 has 4 divisors (see below), whose sum is σ = 75932808. Its totient is φ = 65085240.

The previous prime is 70509017. The next prime is 70509029. The reversal of 70509023 is 32090507.

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

It is an interprime number because it is at equal distance from previous prime (70509017) and next prime (70509029).

It is a cyclic number.

It is not a de Polignac number, because 70509023 - 2¹² = 70504927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70508983 and 70509001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70509029) 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, 2711873 + ... + 2711898.

It is an arithmetic number, because the mean of its divisors is an integer number (18983202).

Almost surely, 2^70509023 is an apocalyptic number.

70509023 is a deficient number, since it is larger than the sum of its proper divisors (5423785).

70509023 is a wasteful number, since it uses less digits than its factorization.

70509023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5423784.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 70509023 is about 8396.9651065132. The cubic root of 70509023 is about 413.1250844966.

The spelling of 70509023 in words is "seventy million, five hundred nine thousand, twenty-three".