742640635 has 8 divisors (see below), whose sum is σ = 972184176. Its totient is φ = 540102240.

The previous prime is 742640623. The next prime is 742640651. The reversal of 742640635 is 536046247.

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

It is not a de Polignac number, because 742640635 - 2⁵ = 742640603 is a prime.

It is a super-2 number, since 2×742640635² = 1103030225506406450, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 742640594 and 742640603.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6751224 + ... + 6751333.

It is an arithmetic number, because the mean of its divisors is an integer number (121523022).

Almost surely, 2^742640635 is an apocalyptic number.

742640635 is a deficient number, since it is larger than the sum of its proper divisors (229543541).

742640635 is a wasteful number, since it uses less digits than its factorization.

742640635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13502573.

The product of its (nonzero) digits is 120960, while the sum is 37.

The square root of 742640635 is about 27251.4336320128. The cubic root of 742640635 is about 905.5787777440.

The spelling of 742640635 in words is "seven hundred forty-two million, six hundred forty thousand, six hundred thirty-five".