145426666 has 16 divisors (see below), whose sum is σ = 271967040. Its totient is φ = 56659680.

The previous prime is 145426663. The next prime is 145426669. The reversal of 145426666 is 666624541.

It is an interprime number because it is at equal distance from previous prime (145426663) and next prime (145426669).

It is a super-2 number, since 2×145426666² = 42297830367751112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145426663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472011 + ... + 472318.

It is an arithmetic number, because the mean of its divisors is an integer number (16997940).

Almost surely, 2^145426666 is an apocalyptic number.

145426666 is a deficient number, since it is larger than the sum of its proper divisors (126540374).

145426666 is a wasteful number, since it uses less digits than its factorization.

145426666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 944349.

The product of its digits is 207360, while the sum is 40.

The square root of 145426666 is about 12059.2979065947. The cubic root of 145426666 is about 525.8735762901.

The spelling of 145426666 in words is "one hundred forty-five million, four hundred twenty-six thousand, six hundred sixty-six".