7977085 has 4 divisors (see below), whose sum is σ = 9572508. Its totient is φ = 6381664.

The previous prime is 7977049. The next prime is 7977119. The reversal of 7977085 is 5807797.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3250809 + 4726276 = 1803^2 + 2174^2 .

It is a cyclic number.

It is not a de Polignac number, because 7977085 - 2¹³ = 7968893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 797704 + ... + 797713.

It is an arithmetic number, because the mean of its divisors is an integer number (2393127).

Almost surely, 2^7977085 is an apocalyptic number.

It is an amenable number.

7977085 is a deficient number, since it is larger than the sum of its proper divisors (1595423).

7977085 is a wasteful number, since it uses less digits than its factorization.

7977085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1595422.

The product of its (nonzero) digits is 123480, while the sum is 43.

The square root of 7977085 is about 2824.3733818318. The cubic root of 7977085 is about 199.8088590505.

The spelling of 7977085 in words is "seven million, nine hundred seventy-seven thousand, eighty-five".