2499064691 has 8 divisors (see below), whose sum is σ = 2559641040. Its totient is φ = 2439173088.

The previous prime is 2499064663. The next prime is 2499064703. The reversal of 2499064691 is 1964609942.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2499064691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2499064391) 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, 163796 + ... + 178401.

It is an arithmetic number, because the mean of its divisors is an integer number (319955130).

Almost surely, 2^2499064691 is an apocalyptic number.

2499064691 is a deficient number, since it is larger than the sum of its proper divisors (60576349).

2499064691 is a wasteful number, since it uses less digits than its factorization.

2499064691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342373.

The product of its (nonzero) digits is 839808, while the sum is 50.

The square root of 2499064691 is about 49990.6460350334. The cubic root of 2499064691 is about 1357.0395325706.

The spelling of 2499064691 in words is "two billion, four hundred ninety-nine million, sixty-four thousand, six hundred ninety-one".