64677420 has 48 divisors (see below), whose sum is σ = 201220320. Its totient is φ = 17247168.

The previous prime is 64677413. The next prime is 64677427. The reversal of 64677420 is 2477646.

64677420 is a `hidden beast` number, since 646 + 7 + 7 + 4 + 2 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (64677413) and next prime (64677427).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (64677427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59347 + ... + 60426.

It is an arithmetic number, because the mean of its divisors is an integer number (4192090).

Almost surely, 2^64677420 is an apocalyptic number.

64677420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64677420 is an abundant number, since it is smaller than the sum of its proper divisors (136542900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64677420 is a wasteful number, since it uses less digits than its factorization.

64677420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119791 (or 119783 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 64677420 is about 8042.2273034278. The cubic root of 64677420 is about 401.4063413818.

The spelling of 64677420 in words is "sixty-four million, six hundred seventy-seven thousand, four hundred twenty".