2651667506 has 4 divisors (see below), whose sum is σ = 3977501262. Its totient is φ = 1325833752.

The previous prime is 2651667467. The next prime is 2651667517. The reversal of 2651667506 is 6057661562.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6057661562 = 2 ⋅3028830781.

It can be written as a sum of positive squares in only one way, i.e., 1326052225 + 1325615281 = 36415^2 + 36409^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662916875 + ... + 662916878.

Almost surely, 2^2651667506 is an apocalyptic number.

2651667506 is a deficient number, since it is larger than the sum of its proper divisors (1325833756).

2651667506 is a wasteful number, since it uses less digits than its factorization.

2651667506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325833755.

The product of its (nonzero) digits is 453600, while the sum is 44.

The square root of 2651667506 is about 51494.3444079056. The cubic root of 2651667506 is about 1384.1176994721.

The spelling of 2651667506 in words is "two billion, six hundred fifty-one million, six hundred sixty-seven thousand, five hundred six".