66763432 has 8 divisors (see below), whose sum is σ = 125181450. Its totient is φ = 33381712.

The previous prime is 66763421. The next prime is 66763441. The reversal of 66763432 is 23436766.

It can be written as a sum of positive squares in only one way, i.e., 59505796 + 7257636 = 7714^2 + 2694^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 66763391 and 66763400.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4172707 + ... + 4172722.

Almost surely, 2^66763432 is an apocalyptic number.

It is an amenable number.

66763432 is a deficient number, since it is larger than the sum of its proper divisors (58418018).

66763432 is a wasteful number, since it uses less digits than its factorization.

66763432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8345435 (or 8345431 counting only the distinct ones).

The product of its digits is 108864, while the sum is 37.

The square root of 66763432 is about 8170.8893028850. The cubic root of 66763432 is about 405.6762202977.

The spelling of 66763432 in words is "sixty-six million, seven hundred sixty-three thousand, four hundred thirty-two".