620427064 has 32 divisors (see below), whose sum is σ = 1230930000. Its totient is φ = 292349952.

The previous prime is 620427061. The next prime is 620427077. The reversal of 620427064 is 460724026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620427061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18762 + ... + 39910.

Almost surely, 2^620427064 is an apocalyptic number.

It is an amenable number.

620427064 is a deficient number, since it is larger than the sum of its proper divisors (610502936).

620427064 is a wasteful number, since it uses less digits than its factorization.

620427064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21367 (or 21363 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 620427064 is about 24908.3733712180. The cubic root of 620427064 is about 852.8976374159.

The spelling of 620427064 in words is "six hundred twenty million, four hundred twenty-seven thousand, sixty-four".