76780253 has 16 divisors (see below), whose sum is σ = 85264704. Its totient is φ = 68559360.

The previous prime is 76780237. The next prime is 76780259. The reversal of 76780253 is 35208767.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 76780253 - 2⁴ = 76780237 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 (76780259) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242051 + ... + 242367.

It is an arithmetic number, because the mean of its divisors is an integer number (5329044).

Almost surely, 2^76780253 is an apocalyptic number.

It is an amenable number.

76780253 is a deficient number, since it is larger than the sum of its proper divisors (8484451).

76780253 is a wasteful number, since it uses less digits than its factorization.

76780253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 652.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 76780253 is about 8762.4341937615. The cubic root of 76780253 is about 425.0269934412.

The spelling of 76780253 in words is "seventy-six million, seven hundred eighty thousand, two hundred fifty-three".