980777077 has 4 divisors (see below), whose sum is σ = 1120888096. Its totient is φ = 840666060.

The previous prime is 980777047. The next prime is 980777117. The reversal of 980777077 is 770777089.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-980777077 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 (980777027) 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, 70055499 + ... + 70055512.

It is an arithmetic number, because the mean of its divisors is an integer number (280222024).

Almost surely, 2^980777077 is an apocalyptic number.

It is an amenable number.

980777077 is a deficient number, since it is larger than the sum of its proper divisors (140111019).

980777077 is a wasteful number, since it uses less digits than its factorization.

980777077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140111018.

The product of its (nonzero) digits is 1210104, while the sum is 52.

The square root of 980777077 is about 31317.3606327225. The cubic root of 980777077 is about 993.5508569638.

The spelling of 980777077 in words is "nine hundred eighty million, seven hundred seventy-seven thousand, seventy-seven".