64151487 has 8 divisors (see below), whose sum is σ = 95039280. Its totient is φ = 42767640.

The previous prime is 64151459. The next prime is 64151491. The reversal of 64151487 is 78415146.

It is a happy number.

64151487 is a `hidden beast` number, since 64 + 1 + 514 + 87 = 666.

It is not a de Polignac number, because 64151487 - 2¹¹ = 64149439 is a prime.

It is a super-2 number, since 2×64151487² = 8230826568622338, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64151497) 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, 1187964 + ... + 1188017.

It is an arithmetic number, because the mean of its divisors is an integer number (11879910).

Almost surely, 2^64151487 is an apocalyptic number.

64151487 is a deficient number, since it is larger than the sum of its proper divisors (30887793).

64151487 is a wasteful number, since it uses less digits than its factorization.

64151487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2375990 (or 2375984 counting only the distinct ones).

The product of its digits is 26880, while the sum is 36.

The square root of 64151487 is about 8009.4623415058. The cubic root of 64151487 is about 400.3153492385.

It can be divided in two parts, 641514 and 87, that added together give a square (641601 = 801²).

The spelling of 64151487 in words is "sixty-four million, one hundred fifty-one thousand, four hundred eighty-seven".