75612949 has 4 divisors (see below), whose sum is σ = 75730464. Its totient is φ = 75495436.

The previous prime is 75612907. The next prime is 75613003. The reversal of 75612949 is 94921657.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94921657 = 487 ⋅194911.

It is a cyclic number.

It is not a de Polignac number, because 75612949 - 2¹¹ = 75610901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75622949) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57787 + ... + 59080.

It is an arithmetic number, because the mean of its divisors is an integer number (18932616).

Almost surely, 2^75612949 is an apocalyptic number.

It is an amenable number.

75612949 is a deficient number, since it is larger than the sum of its proper divisors (117515).

75612949 is a wasteful number, since it uses less digits than its factorization.

75612949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117514.

The product of its digits is 136080, while the sum is 43.

The square root of 75612949 is about 8695.5706540744. The cubic root of 75612949 is about 422.8620642047.

The spelling of 75612949 in words is "seventy-five million, six hundred twelve thousand, nine hundred forty-nine".