70734385 has 4 divisors (see below), whose sum is σ = 84881268. Its totient is φ = 56587504.

The previous prime is 70734347. The next prime is 70734403. The reversal of 70734385 is 58343707.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58343707 = 193 ⋅302299.

It can be written as a sum of positive squares in 2 ways, for example, as 26697889 + 44036496 = 5167^2 + 6636^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70734385 is a prime.

It is a Duffinian 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, 7073434 + ... + 7073443.

It is an arithmetic number, because the mean of its divisors is an integer number (21220317).

Almost surely, 2^70734385 is an apocalyptic number.

It is an amenable number.

70734385 is a deficient number, since it is larger than the sum of its proper divisors (14146883).

70734385 is a wasteful number, since it uses less digits than its factorization.

70734385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14146882.

The product of its (nonzero) digits is 70560, while the sum is 37.

The square root of 70734385 is about 8410.3736540061. The cubic root of 70734385 is about 413.5647619308.

The spelling of 70734385 in words is "seventy million, seven hundred thirty-four thousand, three hundred eighty-five".