70221610 has 8 divisors (see below), whose sum is σ = 126398916. Its totient is φ = 28088640.

The previous prime is 70221607. The next prime is 70221617. The reversal of 70221610 is 1612207.

It can be written as a sum of positive squares in 2 ways, for example, as 63856081 + 6365529 = 7991^2 + 2523^2 .

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

It is not an unprimeable number, because it can be changed into a prime (70221617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3511071 + ... + 3511090.

Almost surely, 2^70221610 is an apocalyptic number.

70221610 is a deficient number, since it is larger than the sum of its proper divisors (56177306).

70221610 is a wasteful number, since it uses less digits than its factorization.

70221610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7022168.

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 70221610 is about 8379.8335305661. The cubic root of 70221610 is about 412.5629851787.

Adding to 70221610 its reverse (1612207), we get a palindrome (71833817).

The spelling of 70221610 in words is "seventy million, two hundred twenty-one thousand, six hundred ten".