662790054 has 16 divisors (see below), whose sum is σ = 1328010048. Its totient is φ = 220525032.

The previous prime is 662790049. The next prime is 662790059. The reversal of 662790054 is 450097266.

It is an interprime number because it is at equal distance from previous prime (662790049) and next prime (662790059).

It is a junction number, because it is equal to n+sod(n) for n = 662789994 and 662790021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (662790059) 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, 97692 + ... + 104255.

It is an arithmetic number, because the mean of its divisors is an integer number (83000628).

Almost surely, 2^662790054 is an apocalyptic number.

662790054 is an abundant number, since it is smaller than the sum of its proper divisors (665219994).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

662790054 is a wasteful number, since it uses less digits than its factorization.

662790054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202499.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 662790054 is about 25744.7092428716. The cubic root of 662790054 is about 871.8839054755.

The spelling of 662790054 in words is "six hundred sixty-two million, seven hundred ninety thousand, fifty-four".