620723667 has 4 divisors (see below), whose sum is σ = 827631560. Its totient is φ = 413815776.

The previous prime is 620723659. The next prime is 620723671. The reversal of 620723667 is 766327026.

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

It is not a de Polignac number, because 620723667 - 2³ = 620723659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (620723267) 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, 103453942 + ... + 103453947.

It is an arithmetic number, because the mean of its divisors is an integer number (206907890).

Almost surely, 2^620723667 is an apocalyptic number.

620723667 is a deficient number, since it is larger than the sum of its proper divisors (206907893).

620723667 is a wasteful number, since it uses less digits than its factorization.

620723667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206907892.

The product of its (nonzero) digits is 127008, while the sum is 39.

The square root of 620723667 is about 24914.3265411690. The cubic root of 620723667 is about 853.0335285954.

The spelling of 620723667 in words is "six hundred twenty million, seven hundred twenty-three thousand, six hundred sixty-seven".