654101642 has 4 divisors (see below), whose sum is σ = 981152466. Its totient is φ = 327050820.

The previous prime is 654101573. The next prime is 654101677. The reversal of 654101642 is 246101456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 433014481 + 221087161 = 20809^2 + 14869^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163525409 + ... + 163525412.

Almost surely, 2^654101642 is an apocalyptic number.

654101642 is a deficient number, since it is larger than the sum of its proper divisors (327050824).

654101642 is a wasteful number, since it uses less digits than its factorization.

654101642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327050823.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 654101642 is about 25575.4108862399. The cubic root of 654101642 is about 868.0573388683.

The spelling of 654101642 in words is "six hundred fifty-four million, one hundred one thousand, six hundred forty-two".