970216621 has 8 divisors (see below), whose sum is σ = 1058925024. Its totient is φ = 881592720.

The previous prime is 970216619. The next prime is 970216669. The reversal of 970216621 is 126612079.

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 970216621 - 2¹ = 970216619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (970216321) 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, 4215 + ... + 44251.

It is an arithmetic number, because the mean of its divisors is an integer number (132365628).

Almost surely, 2^970216621 is an apocalyptic number.

It is an amenable number.

970216621 is a deficient number, since it is larger than the sum of its proper divisors (88708403).

970216621 is a wasteful number, since it uses less digits than its factorization.

970216621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42251.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 970216621 is about 31148.3004512285. The cubic root of 970216621 is about 989.9719819979.

The spelling of 970216621 in words is "nine hundred seventy million, two hundred sixteen thousand, six hundred twenty-one".