220970377 has 4 divisors (see below), whose sum is σ = 221000400. Its totient is φ = 220940356.

The previous prime is 220970363. The next prime is 220970381. The reversal of 220970377 is 773079022.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 773079022 = 2 ⋅386539511.

It is a cyclic number.

It is not a de Polignac number, because 220970377 - 2²³ = 212581769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (220970677) 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, 4374 + ... + 21472.

It is an arithmetic number, because the mean of its divisors is an integer number (55250100).

Almost surely, 2^220970377 is an apocalyptic number.

It is an amenable number.

220970377 is a deficient number, since it is larger than the sum of its proper divisors (30023).

220970377 is a wasteful number, since it uses less digits than its factorization.

220970377 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30022.

The product of its (nonzero) digits is 37044, while the sum is 37.

The square root of 220970377 is about 14865.0723846203. The cubic root of 220970377 is about 604.5673449723.

The spelling of 220970377 in words is "two hundred twenty million, nine hundred seventy thousand, three hundred seventy-seven".