1145664777 has 8 divisors (see below), whose sum is σ = 1542384064. Its totient is φ = 756361008.

The previous prime is 1145664739. The next prime is 1145664803. The reversal of 1145664777 is 7774665411.

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

It is not a de Polignac number, because 1145664777 - 2¹⁶ = 1145599241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145664077) 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, 1853518 + ... + 1854135.

It is an arithmetic number, because the mean of its divisors is an integer number (192798008).

Almost surely, 2^1145664777 is an apocalyptic number.

It is an amenable number.

1145664777 is a deficient number, since it is larger than the sum of its proper divisors (396719287).

1145664777 is a wasteful number, since it uses less digits than its factorization.

1145664777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707759.

The product of its digits is 987840, while the sum is 48.

The square root of 1145664777 is about 33847.6701857011. The cubic root of 1145664777 is about 1046.3713829671.

The spelling of 1145664777 in words is "one billion, one hundred forty-five million, six hundred sixty-four thousand, seven hundred seventy-seven".