1401612657 has 8 divisors (see below), whose sum is σ = 1872564000. Its totient is φ = 932534880.

The previous prime is 1401612643. The next prime is 1401612661. The reversal of 1401612657 is 7562161041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1401612657 - 2⁷ = 1401612529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1401612637) 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, 466644 + ... + 469637.

It is an arithmetic number, because the mean of its divisors is an integer number (234070500).

Almost surely, 2^1401612657 is an apocalyptic number.

It is an amenable number.

1401612657 is a deficient number, since it is larger than the sum of its proper divisors (470951343).

1401612657 is an equidigital number, since it uses as much as digits as its factorization.

1401612657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936783.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 1401612657 is about 37438.1177010811. The cubic root of 1401612657 is about 1119.1183157238.

Adding to 1401612657 its reverse (7562161041), we get a palindrome (8963773698).

The spelling of 1401612657 in words is "one billion, four hundred one million, six hundred twelve thousand, six hundred fifty-seven".