64676340 has 48 divisors (see below), whose sum is σ = 201216960. Its totient is φ = 17246880.

The previous prime is 64676329. The next prime is 64676357. The reversal of 64676340 is 4367646.

64676340 is a `hidden beast` number, since 646 + 7 + 6 + 3 + 4 + 0 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a junction number, because it is equal to n+sod(n) for n = 64676295 and 64676304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59346 + ... + 60425.

It is an arithmetic number, because the mean of its divisors is an integer number (4192020).

Almost surely, 2^64676340 is an apocalyptic number.

64676340 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64676340 is an abundant number, since it is smaller than the sum of its proper divisors (136540620).

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

64676340 is a wasteful number, since it uses less digits than its factorization.

64676340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119789 (or 119781 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 64676340 is about 8042.1601575696. The cubic root of 64676340 is about 401.4041071076.

The spelling of 64676340 in words is "sixty-four million, six hundred seventy-six thousand, three hundred forty".