66953534 has 4 divisors (see below), whose sum is σ = 100430304. Its totient is φ = 33476766.

The previous prime is 66953507. The next prime is 66953561. The reversal of 66953534 is 43535966.

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 (66953507) and next prime (66953561).

It is a junction number, because it is equal to n+sod(n) for n = 66953491 and 66953500.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16738382 + ... + 16738385.

It is an arithmetic number, because the mean of its divisors is an integer number (25107576).

Almost surely, 2^66953534 is an apocalyptic number.

66953534 is a deficient number, since it is larger than the sum of its proper divisors (33476770).

66953534 is a wasteful number, since it uses less digits than its factorization.

66953534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33476769.

The product of its digits is 291600, while the sum is 41.

The square root of 66953534 is about 8182.5139168840. The cubic root of 66953534 is about 406.0608958461.

The spelling of 66953534 in words is "sixty-six million, nine hundred fifty-three thousand, five hundred thirty-four".