70993237 has 4 divisors (see below), whose sum is σ = 81135136. Its totient is φ = 60851340.

The previous prime is 70993213. The next prime is 70993259. The reversal of 70993237 is 73239907.

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.

It is a cyclic number.

It is not a de Polignac number, because 70993237 - 2¹¹ = 70991189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70993237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70993337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5070939 + ... + 5070952.

It is an arithmetic number, because the mean of its divisors is an integer number (20283784).

Almost surely, 2^70993237 is an apocalyptic number.

It is an amenable number.

70993237 is a deficient number, since it is larger than the sum of its proper divisors (10141899).

70993237 is a wasteful number, since it uses less digits than its factorization.

70993237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10141898.

The product of its (nonzero) digits is 71442, while the sum is 40.

The square root of 70993237 is about 8425.7484534016. The cubic root of 70993237 is about 414.0686269424.

The spelling of 70993237 in words is "seventy million, nine hundred ninety-three thousand, two hundred thirty-seven".