70256039 has 4 divisors (see below), whose sum is σ = 80292624. Its totient is φ = 60219456.

The previous prime is 70256027. The next prime is 70256041. The reversal of 70256039 is 93065207.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93065207 = 1217 ⋅76471.

It is a cyclic number.

It is not a de Polignac number, because 70256039 - 2¹² = 70251943 is a prime.

It is a super-2 number, since 2×70256039² = 9871822031939042, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70255996 and 70256014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70256239) 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, 5018282 + ... + 5018295.

It is an arithmetic number, because the mean of its divisors is an integer number (20073156).

Almost surely, 2^70256039 is an apocalyptic number.

70256039 is a deficient number, since it is larger than the sum of its proper divisors (10036585).

70256039 is a wasteful number, since it uses less digits than its factorization.

70256039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10036584.

The product of its (nonzero) digits is 11340, while the sum is 32.

The square root of 70256039 is about 8381.8875559148. The cubic root of 70256039 is about 412.6303994227.

The spelling of 70256039 in words is "seventy million, two hundred fifty-six thousand, thirty-nine".