74961887 has 16 divisors (see below), whose sum is σ = 100649472. Its totient is φ = 53917920.

The previous prime is 74961883. The next prime is 74961923. The reversal of 74961887 is 78816947.

It is not a de Polignac number, because 74961887 - 2² = 74961883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74961881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36443 + ... + 38444.

It is an arithmetic number, because the mean of its divisors is an integer number (6290592).

Almost surely, 2^74961887 is an apocalyptic number.

74961887 is a gapful number since it is divisible by the number (77) formed by its first and last digit.

74961887 is a deficient number, since it is larger than the sum of its proper divisors (25687585).

74961887 is a wasteful number, since it uses less digits than its factorization.

74961887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74918.

The product of its digits is 677376, while the sum is 50.

The square root of 74961887 is about 8658.0533031392. The cubic root of 74961887 is about 421.6448855488.

The spelling of 74961887 in words is "seventy-four million, nine hundred sixty-one thousand, eight hundred eighty-seven".