70739285 has 4 divisors (see below), whose sum is σ = 84887148. Its totient is φ = 56591424.

The previous prime is 70739269. The next prime is 70739341. The reversal of 70739285 is 58293707.

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

It can be written as a sum of positive squares in 2 ways, for example, as 50794129 + 19945156 = 7127^2 + 4466^2 .

It is a cyclic number.

It is not a de Polignac number, because 70739285 - 2⁴ = 70739269 is a prime.

It is a super-2 number, since 2×70739285² = 10008092884622450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7073924 + ... + 7073933.

It is an arithmetic number, because the mean of its divisors is an integer number (21221787).

Almost surely, 2^70739285 is an apocalyptic number.

It is an amenable number.

70739285 is a deficient number, since it is larger than the sum of its proper divisors (14147863).

70739285 is a wasteful number, since it uses less digits than its factorization.

70739285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14147862.

The product of its (nonzero) digits is 105840, while the sum is 41.

The square root of 70739285 is about 8410.6649558760. The cubic root of 70739285 is about 413.5743113673.

The spelling of 70739285 in words is "seventy million, seven hundred thirty-nine thousand, two hundred eighty-five".