402634601 has 4 divisors (see below), whose sum is σ = 402675012. Its totient is φ = 402594192.

The previous prime is 402634591. The next prime is 402634607. The reversal of 402634601 is 106436204.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 170041600 + 232593001 = 13040^2 + 15251^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402634601 is a prime.

It is a super-2 number, since 2×402634601² = 324229243844858402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402634607) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6551 + ... + 29123.

It is an arithmetic number, because the mean of its divisors is an integer number (100668753).

Almost surely, 2^402634601 is an apocalyptic number.

It is an amenable number.

402634601 is a deficient number, since it is larger than the sum of its proper divisors (40411).

402634601 is a wasteful number, since it uses less digits than its factorization.

402634601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40410.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 402634601 is about 20065.7569256682. The cubic root of 402634601 is about 738.4204199408.

The spelling of 402634601 in words is "four hundred two million, six hundred thirty-four thousand, six hundred one".