74372649 has 16 divisors (see below), whose sum is σ = 106972992. Its totient is φ = 45690048.

The previous prime is 74372633. The next prime is 74372651. The reversal of 74372649 is 94627347.

It is not a de Polignac number, because 74372649 - 2⁴ = 74372633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74372649.

It is not an unprimeable number, because it can be changed into a prime (74372609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28914 + ... + 31380.

It is an arithmetic number, because the mean of its divisors is an integer number (6685812).

Almost surely, 2^74372649 is an apocalyptic number.

It is an amenable number.

74372649 is a deficient number, since it is larger than the sum of its proper divisors (32600343).

74372649 is a wasteful number, since it uses less digits than its factorization.

74372649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3256.

The product of its digits is 254016, while the sum is 42.

The square root of 74372649 is about 8623.9578500825. The cubic root of 74372649 is about 420.5371980951.

The spelling of 74372649 in words is "seventy-four million, three hundred seventy-two thousand, six hundred forty-nine".