970777221 has 8 divisors (see below), whose sum is σ = 1294817184. Its totient is φ = 646961040.

The previous prime is 970777211. The next prime is 970777253. The reversal of 970777221 is 122777079.

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

It is not a de Polignac number, because 970777221 - 2⁵ = 970777189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (970777211) 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, 45546 + ... + 63371.

It is an arithmetic number, because the mean of its divisors is an integer number (161852148).

Almost surely, 2^970777221 is an apocalyptic number.

It is an amenable number.

970777221 is a deficient number, since it is larger than the sum of its proper divisors (324039963).

970777221 is a wasteful number, since it uses less digits than its factorization.

970777221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111891.

The product of its (nonzero) digits is 86436, while the sum is 42.

The square root of 970777221 is about 31157.2980375385. The cubic root of 970777221 is about 990.1626168950.

The spelling of 970777221 in words is "nine hundred seventy million, seven hundred seventy-seven thousand, two hundred twenty-one".