70628 has 6 divisors (see below), whose sum is σ = 123606. Its totient is φ = 35312.

The previous prime is 70627. The next prime is 70639. The reversal of 70628 is 82607.

It can be written as a sum of positive squares in only one way, i.e., 47524 + 23104 = 218^2 + 152^2 .

It is not an unprimeable number, because it can be changed into a prime (70621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8825 + ... + 8832.

It is an arithmetic number, because the mean of its divisors is an integer number (20601).

2⁷⁰⁶²⁸ is an apocalyptic number.

It is an amenable number.

70628 is a deficient number, since it is larger than the sum of its proper divisors (52978).

70628 is a wasteful number, since it uses less digits than its factorization.

70628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17661 (or 17659 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 70628 is about 265.7592895836. The cubic root of 70628 is about 41.3357323154.

The spelling of 70628 in words is "seventy thousand, six hundred twenty-eight".