406720037 has 4 divisors (see below), whose sum is σ = 406914816. Its totient is φ = 406525260.

The previous prime is 406720033. The next prime is 406720079. The reversal of 406720037 is 730027604.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 406720037 - 2² = 406720033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 406719991 and 406720009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406720033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94223 + ... + 98444.

It is an arithmetic number, because the mean of its divisors is an integer number (101728704).

Almost surely, 2^406720037 is an apocalyptic number.

It is an amenable number.

406720037 is a deficient number, since it is larger than the sum of its proper divisors (194779).

406720037 is a wasteful number, since it uses less digits than its factorization.

406720037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194778.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 406720037 is about 20167.3011828554. The cubic root of 406720037 is about 740.9095445005.

The spelling of 406720037 in words is "four hundred six million, seven hundred twenty thousand, thirty-seven".