68777553 has 16 divisors (see below), whose sum is σ = 98920640. Its totient is φ = 42254784.

The previous prime is 68777543. The next prime is 68777557. The reversal of 68777553 is 35577786.

It is not a de Polignac number, because 68777553 - 2⁴ = 68777537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68777557) 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, 32475 + ... + 34527.

It is an arithmetic number, because the mean of its divisors is an integer number (6182540).

Almost surely, 2^68777553 is an apocalyptic number.

It is an amenable number.

68777553 is a deficient number, since it is larger than the sum of its proper divisors (30143087).

68777553 is a wasteful number, since it uses less digits than its factorization.

68777553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2928.

The product of its digits is 1234800, while the sum is 48.

The square root of 68777553 is about 8293.2233178662. The cubic root of 68777553 is about 409.7153546794.

The spelling of 68777553 in words is "sixty-eight million, seven hundred seventy-seven thousand, five hundred fifty-three".