7854660998 has 4 divisors (see below), whose sum is σ = 11781991500. Its totient is φ = 3927330498.

The previous prime is 7854660967. The next prime is 7854661013. The reversal of 7854660998 is 8990664587.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8990664587 = 19 ⋅473192873.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7854660998.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1963665248 + ... + 1963665251.

It is an arithmetic number, because the mean of its divisors is an integer number (2945497875).

Almost surely, 2^7854660998 is an apocalyptic number.

7854660998 is a deficient number, since it is larger than the sum of its proper divisors (3927330502).

7854660998 is a wasteful number, since it uses less digits than its factorization.

7854660998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3927330501.

The product of its (nonzero) digits is 26127360, while the sum is 62.

The square root of 7854660998 is about 88626.5253634599. The cubic root of 7854660998 is about 1987.8143219132.

The spelling of 7854660998 in words is "seven billion, eight hundred fifty-four million, six hundred sixty thousand, nine hundred ninety-eight".