401263066 has 4 divisors (see below), whose sum is σ = 601894602. Its totient is φ = 200631532.

The previous prime is 401263061. The next prime is 401263073. The reversal of 401263066 is 660362104.

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

It can be written as a sum of positive squares in only one way, i.e., 353252025 + 48011041 = 18795^2 + 6929^2 .

It is a super-2 number, since 2×401263066² = 322024096271440712, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401263061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100315765 + ... + 100315768.

Almost surely, 2^401263066 is an apocalyptic number.

401263066 is a deficient number, since it is larger than the sum of its proper divisors (200631536).

401263066 is a wasteful number, since it uses less digits than its factorization.

401263066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200631535.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 401263066 is about 20031.5517621576. The cubic root of 401263066 is about 737.5810140248.

The spelling of 401263066 in words is "four hundred one million, two hundred sixty-three thousand, sixty-six".