407275661 has 8 divisors (see below), whose sum is σ = 448805280. Its totient is φ = 367203312.

The previous prime is 407275639. The next prime is 407275663. The reversal of 407275661 is 166572704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 407275661 - 2⁶ = 407275597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (407275663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363731 + ... + 364848.

It is an arithmetic number, because the mean of its divisors is an integer number (56100660).

Almost surely, 2^407275661 is an apocalyptic number.

It is an amenable number.

407275661 is a deficient number, since it is larger than the sum of its proper divisors (41529619).

407275661 is a wasteful number, since it uses less digits than its factorization.

407275661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728635.

The product of its (nonzero) digits is 70560, while the sum is 38.

The square root of 407275661 is about 20181.0718496318. The cubic root of 407275661 is about 741.2467787720.

The spelling of 407275661 in words is "four hundred seven million, two hundred seventy-five thousand, six hundred sixty-one".