1387217601 has 96 divisors (see below), whose sum is σ = 2571678720. Its totient is φ = 699753600.

The previous prime is 1387217599. The next prime is 1387217659. The reversal of 1387217601 is 1067127831.

1387217601 is a `hidden beast` number, since 1 + 38 + 7 + 2 + 17 + 601 = 666.

It is not a de Polignac number, because 1387217601 - 2¹ = 1387217599 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1387217681) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 6574386 + ... + 6574596.

It is an arithmetic number, because the mean of its divisors is an integer number (26788320).

Almost surely, 2^1387217601 is an apocalyptic number.

1387217601 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1387217601 is a deficient number, since it is larger than the sum of its proper divisors (1184461119).

1387217601 is a wasteful number, since it uses less digits than its factorization.

1387217601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467 (or 464 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 1387217601 is about 37245.3701955022. The cubic root of 1387217601 is about 1115.2738777706.

The spelling of 1387217601 in words is "one billion, three hundred eighty-seven million, two hundred seventeen thousand, six hundred one".