70216620 has 24 divisors (see below), whose sum is σ = 196606704. Its totient is φ = 18724416.

The previous prime is 70216567. The next prime is 70216687. The reversal of 70216620 is 2661207.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 585079 + ... + 585198.

It is an arithmetic number, because the mean of its divisors is an integer number (8191946).

Almost surely, 2^70216620 is an apocalyptic number.

It is an amenable number.

70216620 is an abundant number, since it is smaller than the sum of its proper divisors (126390084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

70216620 is a wasteful number, since it uses less digits than its factorization.

70216620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1170289 (or 1170287 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 70216620 is about 8379.5357866650. The cubic root of 70216620 is about 412.5532126027.

Adding to 70216620 its reverse (2661207), we get a palindrome (72877827).

The spelling of 70216620 in words is "seventy million, two hundred sixteen thousand, six hundred twenty".