70252709 has 4 divisors (see below), whose sum is σ = 73950240. Its totient is φ = 66555180.

The previous prime is 70252673. The next prime is 70252711. The reversal of 70252709 is 90725207.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 70252709 - 2⁸ = 70252453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70252729) 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, 1848737 + ... + 1848774.

It is an arithmetic number, because the mean of its divisors is an integer number (18487560).

Almost surely, 2^70252709 is an apocalyptic number.

It is an amenable number.

70252709 is a deficient number, since it is larger than the sum of its proper divisors (3697531).

70252709 is a wasteful number, since it uses less digits than its factorization.

70252709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3697530.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 70252709 is about 8381.6889109534. The cubic root of 70252709 is about 412.6238800262.

The spelling of 70252709 in words is "seventy million, two hundred fifty-two thousand, seven hundred nine".