70990027 has 4 divisors (see below), whose sum is σ = 71061120. Its totient is φ = 70918936.

The previous prime is 70990021. The next prime is 70990037. The reversal of 70990027 is 72009907.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72009907 = 43 ⋅1674649.

It is a cyclic number.

It is not a de Polignac number, because 70990027 - 2¹⁵ = 70957259 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 70989974 and 70990001.

It is not an unprimeable number, because it can be changed into a prime (70990021) 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, 34027 + ... + 36052.

It is an arithmetic number, because the mean of its divisors is an integer number (17765280).

Almost surely, 2^70990027 is an apocalyptic number.

70990027 is a deficient number, since it is larger than the sum of its proper divisors (71093).

70990027 is a wasteful number, since it uses less digits than its factorization.

70990027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71092.

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 70990027 is about 8425.5579637197. The cubic root of 70990027 is about 414.0623860648.

The spelling of 70990027 in words is "seventy million, nine hundred ninety thousand, twenty-seven".