70628018 has 4 divisors (see below), whose sum is σ = 105942030. Its totient is φ = 35314008.

The previous prime is 70628017. The next prime is 70628023. The reversal of 70628018 is 81082607.

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

It can be written as a sum of positive squares in only one way, i.e., 57501889 + 13126129 = 7583^2 + 3623^2 .

It is not an unprimeable number, because it can be changed into a prime (70628017) 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, 17657003 + ... + 17657006.

Almost surely, 2^70628018 is an apocalyptic number.

70628018 is a deficient number, since it is larger than the sum of its proper divisors (35314012).

70628018 is a wasteful number, since it uses less digits than its factorization.

70628018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35314011.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 70628018 is about 8404.0477152382. The cubic root of 70628018 is about 413.3573582694.

The spelling of 70628018 in words is "seventy million, six hundred twenty-eight thousand, eighteen".