66702026 has 4 divisors (see below), whose sum is σ = 100053042. Its totient is φ = 33351012.

The previous prime is 66702017. The next prime is 66702061. The reversal of 66702026 is 62020766.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 62020766 = 2 ⋅31010383.

It can be written as a sum of positive squares in only one way, i.e., 46226401 + 20475625 = 6799^2 + 4525^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66702026.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16675505 + ... + 16675508.

Almost surely, 2^66702026 is an apocalyptic number.

66702026 is a deficient number, since it is larger than the sum of its proper divisors (33351016).

66702026 is a wasteful number, since it uses less digits than its factorization.

66702026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33351015.

The product of its (nonzero) digits is 6048, while the sum is 29.

The square root of 66702026 is about 8167.1308303467. The cubic root of 66702026 is about 405.5518079038.

The spelling of 66702026 in words is "sixty-six million, seven hundred two thousand, twenty-six".