65674980 has 144 divisors (see below), whose sum is σ = 232727040. Its totient is φ = 14678784.

The previous prime is 65674967. The next prime is 65674997. The reversal of 65674980 is 8947656.

65674980 is a `hidden beast` number, since 6 + 567 + 4 + 9 + 80 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 58666 + ... + 59774.

It is an arithmetic number, because the mean of its divisors is an integer number (1616160).

It is a vampire number, since it can be written as 6654 ⋅ 9870 (with its own digits).

Almost surely, 2^65674980 is an apocalyptic number.

65674980 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65674980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116363520).

65674980 is an abundant number, since it is smaller than the sum of its proper divisors (167052060).

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

65674980 is a wasteful number, since it uses less digits than its factorization.

65674980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178 (or 1173 counting only the distinct ones).

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

The square root of 65674980 is about 8104.0101184537. The cubic root of 65674980 is about 403.4595344595.

The spelling of 65674980 in words is "sixty-five million, six hundred seventy-four thousand, nine hundred eighty".