742620687 has 8 divisors (see below), whose sum is σ = 991358640. Its totient is φ = 494481600.

The previous prime is 742620667. The next prime is 742620691. The reversal of 742620687 is 786026247.

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

It is not a de Polignac number, because 742620687 - 2⁶ = 742620623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (742620607) 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, 146814 + ... + 151787.

It is an arithmetic number, because the mean of its divisors is an integer number (123919830).

Almost surely, 2^742620687 is an apocalyptic number.

742620687 is a deficient number, since it is larger than the sum of its proper divisors (248737953).

742620687 is a wasteful number, since it uses less digits than its factorization.

742620687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299433.

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 742620687 is about 27251.0676304617. The cubic root of 742620687 is about 905.5706694494.

The spelling of 742620687 in words is "seven hundred forty-two million, six hundred twenty thousand, six hundred eighty-seven".