70072733 has 4 divisors (see below), whose sum is σ = 70109820. Its totient is φ = 70035648.

The previous prime is 70072727. The next prime is 70072753. The reversal of 70072733 is 33727007.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33727007 = 43 ⋅784349.

It can be written as a sum of positive squares in 2 ways, for example, as 25623844 + 44448889 = 5062^2 + 6667^2 .

It is a cyclic number.

It is not a de Polignac number, because 70072733 - 2¹⁰ = 70071709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70072696 and 70072705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70072753) 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, 15548 + ... + 19541.

It is an arithmetic number, because the mean of its divisors is an integer number (17527455).

Almost surely, 2^70072733 is an apocalyptic number.

It is an amenable number.

70072733 is a deficient number, since it is larger than the sum of its proper divisors (37087).

70072733 is a wasteful number, since it uses less digits than its factorization.

70072733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37086.

The product of its (nonzero) digits is 6174, while the sum is 29.

The square root of 70072733 is about 8370.9457649659. The cubic root of 70072733 is about 412.2712203069.

The spelling of 70072733 in words is "seventy million, seventy-two thousand, seven hundred thirty-three".