620387477 has 4 divisors (see below), whose sum is σ = 656880876. Its totient is φ = 583894080.

The previous prime is 620387461. The next prime is 620387479. The reversal of 620387477 is 774783026.

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

It can be written as a sum of positive squares in 2 ways, for example, as 358950916 + 261436561 = 18946^2 + 16169^2 .

It is a cyclic number.

It is not a de Polignac number, because 620387477 - 2⁴ = 620387461 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 (620387479) 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, 18246674 + ... + 18246707.

It is an arithmetic number, because the mean of its divisors is an integer number (164220219).

Almost surely, 2^620387477 is an apocalyptic number.

It is an amenable number.

620387477 is a deficient number, since it is larger than the sum of its proper divisors (36493399).

620387477 is a wasteful number, since it uses less digits than its factorization.

620387477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36493398.

The product of its (nonzero) digits is 395136, while the sum is 44.

The square root of 620387477 is about 24907.5787060886. The cubic root of 620387477 is about 852.8794970204.

The spelling of 620387477 in words is "six hundred twenty million, three hundred eighty-seven thousand, four hundred seventy-seven".