70489679 has 4 divisors (see below), whose sum is σ = 75911976. Its totient is φ = 65067384.

The previous prime is 70489673. The next prime is 70489697. The reversal of 70489679 is 97698407.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97698407 = 197 ⋅495931.

It is a cyclic number.

It is not a de Polignac number, because 70489679 - 2⁸ = 70489423 is a prime.

It is a super-3 number, since 3×70489679³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70489673) 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, 2711129 + ... + 2711154.

It is an arithmetic number, because the mean of its divisors is an integer number (18977994).

Almost surely, 2^70489679 is an apocalyptic number.

70489679 is a deficient number, since it is larger than the sum of its proper divisors (5422297).

70489679 is a wasteful number, since it uses less digits than its factorization.

70489679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5422296.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 70489679 is about 8395.8131827715. The cubic root of 70489679 is about 413.0873010460.

The spelling of 70489679 in words is "seventy million, four hundred eighty-nine thousand, six hundred seventy-nine".