401662707 has 4 divisors (see below), whose sum is σ = 535550280. Its totient is φ = 267775136.

The previous prime is 401662697. The next prime is 401662721. The reversal of 401662707 is 707266104.

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

It is a cyclic number.

It is not a de Polignac number, because 401662707 - 2⁶ = 401662643 is a prime.

It is a super-2 number, since 2×401662707² = 322665860389135698, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401662747) 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, 66943782 + ... + 66943787.

It is an arithmetic number, because the mean of its divisors is an integer number (133887570).

Almost surely, 2^401662707 is an apocalyptic number.

401662707 is a deficient number, since it is larger than the sum of its proper divisors (133887573).

401662707 is a wasteful number, since it uses less digits than its factorization.

401662707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133887572.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 401662707 is about 20041.5245677568. The cubic root of 401662707 is about 737.8257992496.

The spelling of 401662707 in words is "four hundred one million, six hundred sixty-two thousand, seven hundred seven".