2064787557 has 8 divisors (see below), whose sum is σ = 3146342976. Its totient is φ = 1179878592.

The previous prime is 2064787537. The next prime is 2064787577. The reversal of 2064787557 is 7557874602.

It is an interprime number because it is at equal distance from previous prime (2064787537) and next prime (2064787577).

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

It is not a de Polignac number, because 2064787557 - 2¹⁶ = 2064722021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2064787507) 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, 49161588 + ... + 49161629.

It is an arithmetic number, because the mean of its divisors is an integer number (393292872).

Almost surely, 2^2064787557 is an apocalyptic number.

It is an amenable number.

2064787557 is a deficient number, since it is larger than the sum of its proper divisors (1081555419).

2064787557 is an equidigital number, since it uses as much as digits as its factorization.

2064787557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98323227.

The product of its (nonzero) digits is 3292800, while the sum is 51.

The square root of 2064787557 is about 45439.9335056732. The cubic root of 2064787557 is about 1273.3812715445.

The spelling of 2064787557 in words is "two billion, sixty-four million, seven hundred eighty-seven thousand, five hundred fifty-seven".