64767340 has 24 divisors (see below), whose sum is σ = 148376592. Its totient is φ = 23551680.

The previous prime is 64767337. The next prime is 64767349. The reversal of 64767340 is 4376746.

It is a self number, because there is not a number n which added to its sum of digits gives 64767340.

It is not an unprimeable number, because it can be changed into a prime (64767349) 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, 146979 + ... + 147418.

It is an arithmetic number, because the mean of its divisors is an integer number (6182358).

Almost surely, 2^64767340 is an apocalyptic number.

It is an amenable number.

64767340 is an abundant number, since it is smaller than the sum of its proper divisors (83609252).

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

64767340 is a wasteful number, since it uses less digits than its factorization.

64767340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294417 (or 294415 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 37.

The square root of 64767340 is about 8047.8158527640. The cubic root of 64767340 is about 401.5922782148.

The spelling of 64767340 in words is "sixty-four million, seven hundred sixty-seven thousand, three hundred forty".