74729785 has 8 divisors (see below), whose sum is σ = 96573960. Its totient is φ = 55185024.

The previous prime is 74729777. The next prime is 74729791. The reversal of 74729785 is 58792747.

It can be written as a sum of positive squares in 4 ways, for example, as 356409 + 74373376 = 597^2 + 8624^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 74729785 - 2³ = 74729777 is a prime.

It is a super-3 number, since 3×74729785³ (a number of 25 digits) contains 333 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 7 ways as a sum of consecutive naturals, for example, 574780 + ... + 574909.

It is an arithmetic number, because the mean of its divisors is an integer number (12071745).

Almost surely, 2^74729785 is an apocalyptic number.

It is an amenable number.

74729785 is a deficient number, since it is larger than the sum of its proper divisors (21844175).

74729785 is a wasteful number, since it uses less digits than its factorization.

74729785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149707.

The product of its digits is 987840, while the sum is 49.

The square root of 74729785 is about 8644.6390902108. The cubic root of 74729785 is about 421.2092606189.

The spelling of 74729785 in words is "seventy-four million, seven hundred twenty-nine thousand, seven hundred eighty-five".