70228657 has 8 divisors (see below), whose sum is σ = 71772480. Its totient is φ = 68693040.

The previous prime is 70228619. The next prime is 70228661. The reversal of 70228657 is 75682207.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 70228657 - 2¹⁵ = 70195889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (70228667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17182 + ... + 20872.

It is an arithmetic number, because the mean of its divisors is an integer number (8971560).

Almost surely, 2^70228657 is an apocalyptic number.

It is an amenable number.

70228657 is a deficient number, since it is larger than the sum of its proper divisors (1543823).

70228657 is a wasteful number, since it uses less digits than its factorization.

70228657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4103.

The product of its (nonzero) digits is 47040, while the sum is 37.

The square root of 70228657 is about 8380.2539937642. The cubic root of 70228657 is about 412.5767854609.

The spelling of 70228657 in words is "seventy million, two hundred twenty-eight thousand, six hundred fifty-seven".