64276740 has 120 divisors (see below), whose sum is σ = 220030272. Its totient is φ = 15577920.

The previous prime is 64276739. The next prime is 64276763. The reversal of 64276740 is 4767246.

64276740 is a `hidden beast` number, since 642 + 7 + 6 + 7 + 4 + 0 = 666.

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 = 64276695 and 64276704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16017 + ... + 19623.

Almost surely, 2^64276740 is an apocalyptic number.

64276740 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64276740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110015136).

64276740 is an abundant number, since it is smaller than the sum of its proper divisors (155753532).

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

64276740 is a wasteful number, since it uses less digits than its factorization.

64276740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3639 (or 3628 counting only the distinct ones).

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

The square root of 64276740 is about 8017.2775927992. The cubic root of 64276740 is about 400.5757126565.

The spelling of 64276740 in words is "sixty-four million, two hundred seventy-six thousand, seven hundred forty".