83625407 has 4 divisors (see below), whose sum is σ = 83702736. Its totient is φ = 83548080.

The previous prime is 83625389. The next prime is 83625427. The reversal of 83625407 is 70452638.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70452638 = 2 ⋅35226319.

It is a cyclic number.

It is not a de Polignac number, because 83625407 - 2⁶ = 83625343 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 (83625427) 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, 37019 + ... + 39212.

It is an arithmetic number, because the mean of its divisors is an integer number (20925684).

Almost surely, 2^83625407 is an apocalyptic number.

83625407 is a deficient number, since it is larger than the sum of its proper divisors (77329).

83625407 is a wasteful number, since it uses less digits than its factorization.

83625407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77328.

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 83625407 is about 9144.6928324575. The cubic root of 83625407 is about 437.2999370448.

It can be divided in two parts, 83625 and 407, that multiplied together give a triangular number (34035375 = T₈₂₅₀).

The spelling of 83625407 in words is "eighty-three million, six hundred twenty-five thousand, four hundred seven".