66702043 has 4 divisors (see below), whose sum is σ = 66948448. Its totient is φ = 66455640.

The previous prime is 66702017. The next prime is 66702061. The reversal of 66702043 is 34020766.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66702043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66702343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122796 + ... + 123337.

It is an arithmetic number, because the mean of its divisors is an integer number (16737112).

Almost surely, 2^66702043 is an apocalyptic number.

66702043 is a deficient number, since it is larger than the sum of its proper divisors (246405).

66702043 is a wasteful number, since it uses less digits than its factorization.

66702043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246404.

The product of its (nonzero) digits is 6048, while the sum is 28.

The square root of 66702043 is about 8167.1318711038. The cubic root of 66702043 is about 405.5518423574.

It can be divided in two parts, 6670 and 2043, that multiplied together give a triangular number (13626810 = T₅₂₂₀).

The spelling of 66702043 in words is "sixty-six million, seven hundred two thousand, forty-three".