70685998 has 4 divisors (see below), whose sum is σ = 106029000. Its totient is φ = 35342998.

The previous prime is 70685981. The next prime is 70685999. The reversal of 70685998 is 89958607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89958607 = 2089 ⋅43063.

It is a super-4 number, since 4×70685998⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70685999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17671498 + ... + 17671501.

It is an arithmetic number, because the mean of its divisors is an integer number (26507250).

Almost surely, 2^70685998 is an apocalyptic number.

70685998 is a deficient number, since it is larger than the sum of its proper divisors (35343002).

70685998 is a wasteful number, since it uses less digits than its factorization.

70685998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35343001.

The product of its (nonzero) digits is 1088640, while the sum is 52.

The square root of 70685998 is about 8407.4965358304. The cubic root of 70685998 is about 413.4704385318.

It can be divided in two parts, 7068599 and 8, that added together give a palindrome (7068607).

The spelling of 70685998 in words is "seventy million, six hundred eighty-five thousand, nine hundred ninety-eight".