4978665 has 40 divisors (see below), whose sum is σ = 9408960. Its totient is φ = 2511648.

The previous prime is 4978657. The next prime is 4978681. The reversal of 4978665 is 5668794.

4978665 is nontrivially palindromic in base 2.

It is not a de Polignac number, because 4978665 - 2³ = 4978657 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

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 4978665.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 7372 + ... + 8018.

It is an arithmetic number, because the mean of its divisors is an integer number (235224).

Almost surely, 2^4978665 is an apocalyptic number.

4978665 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4978665 is a deficient number, since it is larger than the sum of its proper divisors (4430295).

4978665 is a wasteful number, since it uses less digits than its factorization.

4978665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 683 (or 674 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 4978665 is about 2231.2922264912. The cubic root of 4978665 is about 170.7540323328.

The spelling of 4978665 in words is "four million, nine hundred seventy-eight thousand, six hundred sixty-five".