70689406 has 4 divisors (see below), whose sum is σ = 106034112. Its totient is φ = 35344702.

The previous prime is 70689401. The next prime is 70689413. The reversal of 70689406 is 60498607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 60498607 = 13 ⋅4653739.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70689401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17672350 + ... + 17672353.

It is an arithmetic number, because the mean of its divisors is an integer number (26508528).

Almost surely, 2^70689406 is an apocalyptic number.

70689406 is a deficient number, since it is larger than the sum of its proper divisors (35344706).

70689406 is a wasteful number, since it uses less digits than its factorization.

70689406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35344705.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 70689406 is about 8407.6992096530. The cubic root of 70689406 is about 413.4770833396.

The spelling of 70689406 in words is "seventy million, six hundred eighty-nine thousand, four hundred six".