653155642 has 8 divisors (see below), whose sum is σ = 980171316. Its totient is φ = 326431872.

The previous prime is 653155621. The next prime is 653155693. The reversal of 653155642 is 246551356.

It can be written as a sum of positive squares in 2 ways, for example, as 444324241 + 208831401 = 21079^2 + 14451^2 .

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

It is a super-5 number, since 5×653155642⁵ (a number of 45 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67293 + ... + 76384.

Almost surely, 2^653155642 is an apocalyptic number.

653155642 is a deficient number, since it is larger than the sum of its proper divisors (327015674).

653155642 is a wasteful number, since it uses less digits than its factorization.

653155642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145952.

The product of its digits is 108000, while the sum is 37.

The square root of 653155642 is about 25556.9098679790. The cubic root of 653155642 is about 867.6386585548.

The spelling of 653155642 in words is "six hundred fifty-three million, one hundred fifty-five thousand, six hundred forty-two".