64496987 has 2 divisors, whose sum is σ = 64496988. Its totient is φ = 64496986.

The previous prime is 64496959. The next prime is 64497007. The reversal of 64496987 is 78969446.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64496987 is a prime.

It is a super-2 number, since 2×64496987² = 8319722664156338, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (64496387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32248493 + 32248494.

It is an arithmetic number, because the mean of its divisors is an integer number (32248494).

Almost surely, 2^64496987 is an apocalyptic number.

64496987 is a deficient number, since it is larger than the sum of its proper divisors (1).

64496987 is an equidigital number, since it uses as much as digits as its factorization.

64496987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2612736, while the sum is 53.

The square root of 64496987 is about 8031.0016187273. The cubic root of 64496987 is about 401.0327210070.

The spelling of 64496987 in words is "sixty-four million, four hundred ninety-six thousand, nine hundred eighty-seven".