770242091 has 4 divisors (see below), whose sum is σ = 775343184. Its totient is φ = 765141000.

The previous prime is 770242073. The next prime is 770242097. The reversal of 770242091 is 190242077.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 770242091 - 2¹⁰ = 770241067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (770242097) 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, 2550320 + ... + 2550621.

It is an arithmetic number, because the mean of its divisors is an integer number (193835796).

Almost surely, 2^770242091 is an apocalyptic number.

770242091 is a deficient number, since it is larger than the sum of its proper divisors (5101093).

770242091 is a wasteful number, since it uses less digits than its factorization.

770242091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5101092.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 770242091 is about 27753.2356852314. The cubic root of 770242091 is about 916.6616926378.

The spelling of 770242091 in words is "seven hundred seventy million, two hundred forty-two thousand, ninety-one".