70272613 has 4 divisors (see below), whose sum is σ = 73327968. Its totient is φ = 67217260.

The previous prime is 70272593. The next prime is 70272619. The reversal of 70272613 is 31627207.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31627207 = 5167 ⋅6121.

It is a cyclic number.

It is not a de Polignac number, because 70272613 - 2⁵ = 70272581 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 (70272619) 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, 1527643 + ... + 1527688.

It is an arithmetic number, because the mean of its divisors is an integer number (18331992).

Almost surely, 2^70272613 is an apocalyptic number.

It is an amenable number.

70272613 is a deficient number, since it is larger than the sum of its proper divisors (3055355).

70272613 is a wasteful number, since it uses less digits than its factorization.

70272613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055354.

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 70272613 is about 8382.8761770648. The cubic root of 70272613 is about 412.6628445507.

The spelling of 70272613 in words is "seventy million, two hundred seventy-two thousand, six hundred thirteen".