70989549 has 8 divisors (see below), whose sum is σ = 94708320. Its totient is φ = 47298576.

The previous prime is 70989521. The next prime is 70989553. The reversal of 70989549 is 94598907.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 70989549 - 2¹⁷ = 70858477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70989509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7 + ... + 11915.

It is an arithmetic number, because the mean of its divisors is an integer number (11838540).

Almost surely, 2^70989549 is an apocalyptic number.

It is an amenable number.

70989549 is a deficient number, since it is larger than the sum of its proper divisors (23718771).

70989549 is a wasteful number, since it uses less digits than its factorization.

70989549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13899.

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 70989549 is about 8425.5295975980. The cubic root of 70989549 is about 414.0614567217.

The spelling of 70989549 in words is "seventy million, nine hundred eighty-nine thousand, five hundred forty-nine".