70633139 has 4 divisors (see below), whose sum is σ = 70731024. Its totient is φ = 70535256.

The previous prime is 70633103. The next prime is 70633141. The reversal of 70633139 is 93133607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93133607 = 7 ⋅13304801.

It is a cyclic number.

It is not a de Polignac number, because 70633139 - 2¹⁶ = 70567603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70633039) 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, 47852 + ... + 49305.

It is an arithmetic number, because the mean of its divisors is an integer number (17682756).

Almost surely, 2^70633139 is an apocalyptic number.

70633139 is a deficient number, since it is larger than the sum of its proper divisors (97885).

70633139 is an equidigital number, since it uses as much as digits as its factorization.

70633139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97884.

The product of its (nonzero) digits is 10206, while the sum is 32.

The square root of 70633139 is about 8404.3523843304. The cubic root of 70633139 is about 413.3673484118.

The spelling of 70633139 in words is "seventy million, six hundred thirty-three thousand, one hundred thirty-nine".