70990471 has 4 divisors (see below), whose sum is σ = 71108032. Its totient is φ = 70872912.

The previous prime is 70990459. The next prime is 70990547. The reversal of 70990471 is 17409907.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 70990471 - 2⁷ = 70990343 is a prime.

It is a super-3 number, since 3×70990471³ (a number of 25 digits) contains 333 as substring.

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 70990471.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70990411) 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, 57870 + ... + 59083.

It is an arithmetic number, because the mean of its divisors is an integer number (17777008).

Almost surely, 2^70990471 is an apocalyptic number.

70990471 is a deficient number, since it is larger than the sum of its proper divisors (117561).

70990471 is a wasteful number, since it uses less digits than its factorization.

70990471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117560.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 70990471 is about 8425.5843120819. The cubic root of 70990471 is about 414.0632493002.

The spelling of 70990471 in words is "seventy million, nine hundred ninety thousand, four hundred seventy-one".