66760534 has 4 divisors (see below), whose sum is σ = 100140804. Its totient is φ = 33380266.

The previous prime is 66760531. The next prime is 66760537. The reversal of 66760534 is 43506766.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (66760531) and next prime (66760537).

It is a junction number, because it is equal to n+sod(n) for n = 66760493 and 66760502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66760531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16690132 + ... + 16690135.

It is an arithmetic number, because the mean of its divisors is an integer number (25035201).

Almost surely, 2^66760534 is an apocalyptic number.

66760534 is a deficient number, since it is larger than the sum of its proper divisors (33380270).

66760534 is a wasteful number, since it uses less digits than its factorization.

66760534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33380269.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 66760534 is about 8170.7119640824. The cubic root of 66760534 is about 405.6703504842.

The spelling of 66760534 in words is "sixty-six million, seven hundred sixty thousand, five hundred thirty-four".