77045261 has 8 divisors (see below), whose sum is σ = 79636224. Its totient is φ = 74460960.

The previous prime is 77045251. The next prime is 77045281. The reversal of 77045261 is 16254077.

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

It is a cyclic number.

It is not a de Polignac number, because 77045261 - 2⁶ = 77045197 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 (77045201) 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, 34985 + ... + 37121.

It is an arithmetic number, because the mean of its divisors is an integer number (9954528).

Almost surely, 2^77045261 is an apocalyptic number.

It is an amenable number.

77045261 is a deficient number, since it is larger than the sum of its proper divisors (2590963).

77045261 is a wasteful number, since it uses less digits than its factorization.

77045261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3331.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 77045261 is about 8777.5429933439. The cubic root of 77045261 is about 425.5154272478.

The spelling of 77045261 in words is "seventy-seven million, forty-five thousand, two hundred sixty-one".