70228665 has 24 divisors (see below), whose sum is σ = 131094600. Its totient is φ = 34573824.

The previous prime is 70228661. The next prime is 70228667. The reversal of 70228665 is 56682207.

It can be written as a sum of positive squares in 4 ways, for example, as 12027024 + 58201641 = 3468^2 + 7629^2 .

It is not a de Polignac number, because 70228665 - 2² = 70228661 is a prime.

It is not an unprimeable number, because it can be changed into a prime (70228661) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59440 + ... + 60609.

It is an arithmetic number, because the mean of its divisors is an integer number (5462275).

Almost surely, 2^70228665 is an apocalyptic number.

It is an amenable number.

70228665 is a deficient number, since it is larger than the sum of its proper divisors (60865935).

70228665 is a wasteful number, since it uses less digits than its factorization.

70228665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120073 (or 120070 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 70228665 is about 8380.2544710766. The cubic root of 70228665 is about 412.5768011269.

The spelling of 70228665 in words is "seventy million, two hundred twenty-eight thousand, six hundred sixty-five".